Khongso_904187 Tiêu Chuẩn Kỹ Thuật Áp Dụng Cho Chương Trình Củng Cố, Bảo Vệ Và Nâng Cấp Đê Biển

B NNG NGHIP V PHT TRIN NNG THN

B NNG NGHIP V PHT TRIN NNG THN--------CNG HA X HI CH NGHA VIT NAMc lp - T do - Hnh phc ---------------

S: 1613/Q-BNN-KHCNH Ni, ngy 09 thng 7 nm 2012

QUYT NHV VIC BAN HNH TIU CHUN K THUT P DNG CHO CHNG TRNH CNG C, BO V V NNG CP BIN

B TRNG B NNG NGHIP V PHT TRIN NNG THNCn c Ngh nh s 01/2008/N-CP ngy 03/01/2008; Ngh nh s 75/2009/N-CP ngy 10/09/2009 ca Chnh ph quy nh chc nng, nhim v, quyn hn v c cu t chc ca B Nng nghip v Pht trin nng thn;

Cn c Quyt nh s 58/2006/Q-TTg ngy 14 thng 3 nm 2006 ca Th tng Chnh ph ph duyt Chng trnh cng c, bo v v nng cp bin hin c ti cc tnh c t Qung Ninh n Qung Nam; Quyt nh s 667/Q-TTg ngy 27 thng 5 nm 2009 ca Th tng Chnh ph v vic ph duyt Chng trnh cng c, nng cp h thng bin t Qung Ngi n Kin Giang;

Cn c Quyt nh s 671/Q-BNN-KHCN ngy 15/3/2007 ca B trng B Nng nghip v Pht trin nng thn ph duyt Chng trnh khoa hc cng ngh phc v xy dng bin v cng trnh thy li vng ca sng ven bin;

Theo ngh ca V trng V Khoa hc, Cng ngh v Mi trng, Tng cc trng Tng cc Thy li,

QUYT NH:iu 1. Ban hnh km theo Quyt nh ny Tiu chun k thut p dng cho Chng trnh cng c, bo v v nng cp bin.iu 2. Tiu chun p dng trong vic lp, thm nh, ph duyt cc d n thuc Chng trnh cng c, bo v v nng cp bin.iu 3. Quyt nh ny c hiu lc k t ngy k ban hnh, thay th Quyt nh s 57/Q-BNN-KHCN ngy 08/01/2010.

Chnh Vn phng B, V trng V Khoa hc, Cng ngh v Mi trng, Tng cc trng Tng cc Thy li, Th trng cc n v c lin quan chu trch nhim thi hnh Quyt nh ny./.

Ni nhn:- Nh iu 3;- Lu VT.KT. B TRNGTH TRNG

Hong Vn Thng

MC LC1. Phm vi p dng

2. Ti liu vin dn

3. Ti liu c bn lm cn c thit k3.1 Ti liu a hnh3.2 Ti liu a cht

3.3 Ti liu kh tng, thy vn, hi vn3.4. Ti liu dn sinh, kinh t v mi trng4. Tiu chun an ton v phn cp 4.1. Tiu chun an ton4.2. Xc nh cp 5. Tuyn 5.1. Yu cu chung5.2. Yu cu v v tr tuyn 5.3. Yu cu v hnh dng tuyn 5.3.1. i vi tuyn mi5.3.2 i vi tuyn hin c5.4. Thit k tuyn vng bi thay i5.4.1.Tuyn vng bi bi5.4.2. Tuyn vng bi bin xi6. Xc nh cc tham s hi vn6.1. Mc nc thit k6.1.1. trc din vi bin6.1.2. bao quanh vng ca sng v m ph6.2. Tham s sng thit k6.2.1. Ti vng nc su (sng ngoi khi)6.2.2. Ti chn cng trnh6.2.3. Tnh ton sng khi c rng ngp mn7. Thit k mt ct

7.1. Yu cu thit k mt ct7.2. Mt ct c trng7.3. Xc nh cc tham s thit k mt ct 7.3.1. Cao trnh nh 7.3.2. Tnh ton kch thc, kt cu mt ct7.3.3. Tnh ton n nh 7.3.4. Tnh ton ln7.3.5. Thit k k bo v mi 8. Cng trnh bo v bi, gim sng8.1. Trng rng phng h8.1.1. Tc dng v yu cu8.1.2. Thit k trng cy8.1.3. Xc nh h s gim sng8.1.4 Xc nh chiu rng ca ai rng ngp mn8.2. Bin php cng trnh chng xi, gim sng8.2.1. Chc nng, nhim v8.2.2. Thit k h thng p m hn, p gim sng8.3. Nui bi nhn to8.3.1. Khi nim, qu trnh hnh thnh v pht trin8.3.2. Trnh t thit k8.3.3. Cc thng s c bn ca cng trnh nui bi nhn to8.3.4 Hnh thc nui bi8.3.5 V tr nui bi8.3.6 Khi lng ct s dng nui bi8.3.7 Yu cu v kch thc ca vt liu s dng nui bi8.3.8 Ngun ct nui bi9. Qun l v bo v cn ct ven bin9.1.Vai tr ca cn ct ven bin9.2. Phm vi v cc yu t c trng ca cn ct ven bin9.2.1 Phm vi cn ct9.2.2 Tnh ton xi l cn ct9.3. Gii php qun l bo v cn ct ven bin9.3.1. Gii php khng cng trnh9.3.2. Gii php cng trnh10. Yu cu k thut trong thi cng10.1 Thi cng 10.1.1. Yu cu k thut thi cng 10.1.2. Vt liu t p10.2. Thi cng cng trnh bo v mi 10.3. Thi cng lp lc10.4. Thi cng m hn10.5. Mi trng11. Qun l, duy tu, bo dng bin11.1 Qun l11.2. Cng trnh ph tr11.3. Kim tra, nh gi trng thi lm vic ca cng trnh11.4. Duy tu, bo dngPH LC

Ph lc A :ng tn sut mc nc bin tng hp ven b t Qung Ninh n Kin Giang

Ph lc B: Tnh ton sng v bng tra sng phc v thit k bin

Ph lc C: Tnh ton sng leo/sng trn thit k

Ph lc D: Tnh ton p lc sng

Ph lc E: Ch dn thit k trng rng phng h ven bin Ph lc G: Hng dn tnh ton xi l cn ct

Ph lc H: Hng dn s dng chng trnh SWAN-One

TIU CHUN K THUT

THIT K BIN(Ban hnh theo Quyt nh s 1613/Q-BNN-KHCN ngy 09/7/2012 ca B trng B Nng nghip v Pht trin nng thn)

LI NI U

Tiu chun c bin son t 14TCN 130-2002 Hng dn thit k bin v Tiu chun k thut p dng cho chng trnh cng c, bo v v nng cp bin t Qung Ninh n Qung Nam (Ban hnh km theo Quyt nh s 57/Q-BNN-KHCN ngy 08 thng 01 nm 2010), c chnh sa, cp nht v b sung t mt s kt qu nghin cu ca cc ti khoa hc cng ngh giai on II thuc Chng trnh khoa hc cng ngh phc v xy dng bin v cng trnh thy li vng ca sng ven bin v cc tiu chun khc c lin quan.

Tiu chun do T son tho Hng dn thit k bin (km theo Quyt nh s 1522/Q-BNN-KHCN ngy 07 thng 6 nm 2010 ca B trng B Nng nghip v Pht trin nng thn) bin son c s h tr ca Trng i hc Thy li v Trng i hc Cng ngh Delft, H Lan; Cc Qun l iu v Phng chng lt bo, V Khoa hc Cng ngh v Mi trng ngh; B Nng nghip v Pht trin Nng thn ban hnh.

1. Phm vi p dng

1.1 Tiu chun k thut ny quy nh v cc tiu ch, ch s k thut v cc yu cu khi thit k, thm nh, ph duyt cc d n u t xy dng thuc Chng trnh cng c, bo v v nng cp bin c Th tng Chnh ph ph duyt ti Quyt nh s 58/2006/Q-TTg ngy 14 thng 3 nm 2006 i vi cc tnh ven bin t Qung Ninh n Qung Nam v Quyt nh s 667/Q-TTg ngy 27 thng 5 nm 2009 i vi cc tnh ven bin t Qung Ngi n Kin Giang.

1.2 Khi p dng, ngoi cc quy nh trong tiu chun ny, cn phi tun th cc quy nh trong cc vn bn quy phm php lut khc c lin quan.

1.3 Tiu chun ny c th c s dng nh ti liu tham kho cho cng trnh khc c iu kin k thut tng t.

2. Ti liu vin dn

Cc ti liu vin dn sau l cn thit cho vic p dng tiu chun ny. i vi cc ti liu vin dn ghi nm cng b th p dng bn c nu. i vi cc ti liu vin dn khng ghi nm cng b th p dng bn mi nht, bao gm c cc sa i (nu c).

TCVN 8481- 2010, Quy nh thnh phn, khi lng kho st a hnh i vi cng trnh iu; TCVN 8477: 2010, Quy nh thnh phn, khi lng kho st a cht trong cc giai on lp d n v thit k cng trnh thu li;

TCVN 8216:2009, Thit k p t m nn;

TCVN 4253:2012, Cng trnh thy li - Nn cc cng trnh thy cng - Yu cu thit k;

TCVN 8166:2012, Cng trnh thy li Yu cu k thut thi cng bng bin php m nn nh; TCVN 9165:2012, Cng trnh thy li - Yu cu k thut p ;

3. Ti liu c bn lm cn c thit k

3.1. Ti liu a hnh

- Thnh phn, khi lng kho st a hnh: p dng Tiu chun TCVN 8481- 2010 quy nh thnh phn, khi lng kho st a hnh i vi cng trnh iu.

- Ngoi ra cn p dng cc quy nh sau:

+ Ti liu thu thp c thi gian khng qu 05 nm i vi vng bi trc n nh v khng qu 01 nm i vi vng bi ang bi hoc xi;

+ Phm vi o c ti thiu 100m t tim tuyn d kin v pha ng v 100m t ng mp nc v pha bin. Trong trng hp trng rng ngp mn, cn kho st phm vi v pha bin ti thiu l 500m.

+ tnh ton truyn sng t vng nc su vo v tr chn cng trnh, i vi mi tuyn c chiu di nh hn hoc bng 10 km cn kho st 01 mt ct ngang i din (vung gc vi hng trung bnh ca tuyn ) t mp nc ti khu vc ngoi khi c su 10m.

+ i vi vng b bin xi, cn thu thp thm ti liu lch s v din bin ca ng b t nht l 20 nm so vi thi im lp d n;

+ Trng hp vng t d kin tuyn i qua l vng t yu phn b rng (vng m ly) c th s dng phng php khng nh xem xt tng th a hnh, a mo.

3.2. Ti liu a cht

- Thnh phn, khi lng kho st a cht p dng theo Tiu chun ngnh TCVN 8477: 2010 quy nh thnh phn, khi lng kho st a cht trong cc giai on lp d n v thit k cng trnh thu li.

- i vi cng trnh t trn nn t yu thnh phn khi lng kho st a cht tham kho thm cc tiu chun nh: 22 TCN 262-2000 Quy trnh kho st thit k nn ng t p trn t yu; 22 TCN 260-2000 Quy trnh kho st a cht cc cng trnh ng thy (trong c cng trnh k b, k chn sng, k chng sa bi, tng chn.vv...).

- Ngoi ra, cn cn c iu kin thc t cng trnh xc nh thnh phn khi lng kho st a cht ph hp, trnh cp c thm quyn ph duyt.

3.3. Ti liu kh tng, thy vn, hi vn

Thu thp v phn tch ti liu v thy triu, bo, nc dng do bo, dng ven, vn chuyn bn ct, sng, dng chy l vng ca sng v cc thin tai khc trong khu vc d n. Thi gian thu thp ti liu ti thiu 20 nm so vi thi im lp d n. Trng hp cha c ti liu cn tin hnh o c, b sung s liu v s dng m hnh tnh ton ph hp m phng v nh gi xu th bin ng.

3.4. Ti liu dn sinh, kinh t v mi trng

- Thu thp, thng k ti liu v dn s, kinh t v mi trng hin trng;

- Quy hoch v k hoach pht trin kinh t - x hi trong tng lai.

4. Tiu chun an ton v phn cp

4.1. Tiu chun an ton

Tiu chun an ton (TCAT) c xc nh trn c s kt qu bi ton phn tch ti u xt ti mc thit hi v ngi, c s h tng, ti sn trong vng c bo v v tng mc u t. TCAT c th hin bng chu k lp li (nm), quy nh ti Bng 1.

4.2. Xc nh cp

- bin c phn lm 5 cp: cp I, cp II, cp III, cp IV v cp V.

- Cp c xc nh theo hng dn phn cp ban hnh km theo vn bn s 4116/BNN- TCTL ngy 13 thng 12 nm 2010 ca B Nng nghip v Pht trin nng thn.

- Trng hp khng ti liu xc nh cp theo hng dn ti vn bn s 4116/BNN-TCTL th c th xc nh cp theo tiu chun an ton ti Bng 1.

- Cp la chn cui cng l cp c gi tr bng hoc nh hn theo cc tiu ch nu trn v khng nm ngoi phm vi phn cp t cp I n cp V.

- Trong trng hp tuyn kt hp vi cc vai tr quan trng khc nh vn an ninh, quc phng hoc thuc vng c c th ring v cc mt kinh t, x hi th cn c nhng quy nh ring trong vic la chn cp i vi tng trng hp c th.

Bng 1. Tiu chun an ton v phn cp VngTiu chun an ton

(chu k lp li:nm)Cp

Vng th, cng nghip pht trin*:

- Din tch bo v > 100.000 ha

- Dn s > 200.000 ngi150I

Vng nng thn c nng nghip pht trin, c quy hoch khu th, khu cng nghip:

- Din tch bo v: t 50.000 n 100.000 ha

- Dn s: t 100.000 n 200.000 ngi100II

Vng nng thn, nng nghip pht trin:

- Din tch bo v: t 10.000 n 50.000 ha

- Dn s: t 50.000 n 100.000 ngi50III

Vng nng thn, nng nghip pht trin trung bnh:

- Din tch bo v: t 5.000 n 10.000 ha

- Dn s: t 10.000 n 50.000 ngi30IV

Vng nng thn, nng nghip chm pht trin:

- Din tch bo v: < 5.000 ha

- Dn s : < 10.000 ngi10V

GHI CH:

-(*): Khu cng nghip, nng nghip pht trin l da trn t l c cu kinh t trong vng c bo v. Nu t l cng nghip ln hn th thuc vng cng nghip pht trin v ngc li.

- Khi s dng Bng 1, trc ht phi xp vng c bo v thuc loi vng thnh th hay nng thn, cng nghip hay nng nghiptheo tiu ch vng sau xem xt hai tiu ch (din tch, dn s) xc nh TCAT. Trng hp vng c bo v ch t 1 tiu ch th h xung 1 mc. Vic phn vng xt phi cp n quy hoch v k hoch pht trin kinh t - x hi n 2020 v tm nhn n 2050.

- Cc tuyn b bao thit k vi chu k lp li nh hn 10 nm c xc nh l cc b bao tm hoc quy phc v thi cng.

5. Tuyn

5.1. Yu cu chung

- Ph hp vi quy hoch tng th;

- Cn c iu kin a hnh, a cht;

- nh gi din bin b bin, bi bin v ca sng;

- An ton, thun li trong xy dng, qun l v duy tr, pht trin cy chn sng trc ;

- Bo v cc di tch vn ho, lch s v a gii hnh chnh;

- Kt hp vi ng giao thng ven bin (nu ph hp);

- Ph hp vi cc gii php thch ng do nh hng ca bin i kh hu;

- m bo quy nh v nh gi tc ng mi trng.

5.2. Yu cu v v tr tuyn

- i qua vng c a th cao, a cht nn tng i tt;

- Ni tip thng thun v m bo n nh i vi cc cng trnh c;

- Thun li cho vic b tr cc cng trnh ph tr;

- Khng nh hng n thot l v cng trnh chnh tr ca sng (i vi ca sng);

- p ng yu cu i vi cc hot ng bn vng ca bn cng, bi tm, khu du lch, di tch lch s v danh lam thng cnh;

- i vi tuyn kt hp vi h thng giao thng v an ninh quc phng cn phi tun theo cc quy nh khc ca ngnh giao thng v quc phng;

- Tn dng ti a cc cn ct t nhin, i ni, cng trnh c khp kn tuyn , p ng yu cu kinh t - k thut ca tuyn ;

- So snh hiu qu ca 02 n 03 phng n tuyn la chn v tr t hiu qu tng hp tt nht;

- i vi tuyn quan trng cn tin hnh th nghim m hnh thu lc xc nh v tr tuyn thch hp.

5.3. Yu cu v hnh dng tuyn

5.3.1. i vi tuyn mi- Hnh dng mt bng tuyn nn trnh gp khc, gim thiu ti a s tp trung nng lng sng cc b; ng thi nn trnh vung gc vi hng gi thnh hnh; thng qua so snh v khi lng cng trnh v tng mc u t quyt nh dng tuyn ph hp;

- Trong trng hp phi b tr tuyn cong, cn c cc bin php gim sng hoc tng cng sc chng ca khu vc cong;

- Khng to ra im xung yu ni ni tip vi cc cng trnh ln cn v khng nh hng n cc vng t lin quan.

5.3.2. i vi tuyn hin c

Trng hp thit k nng cp tuyn hin c, cn phi xem xt cc yu cu nu mc (5.3.1) iu chnh cc b tuyn cho ph hp.

5.4. Thit k tuyn vng bi thay i

5.4.1. Tuyn vng bi bi

5.4.1.1. Yu cu chung

- Ph hp vi quy hoch h thng knh mng thu li, h thng ngn v cng thot nc trong khu vc c bo v, h thng giao thng phc v thi cng v khai thc

- c xc nh trn c s kt qu nghin cu v quy lut bi trong vng quai v cc yu t nh hng khc nh iu kin thu ng lc vng ni tip, sng, dng bn ct ven b, s mt cn bng ti ct vng ln cn, d bo xu th pht trin ca vng bi trong tng lai;

- Thun li trong thi cng, c bit l cng tc hp long , tiu thot ng, bi p t mi, ci to th nhng (thau chua, ra mn), c cu cy trng, quy trnh khai thc v bo v mi trng.

5.4.1.2. i vi trng hp quai ln bin

- Trn c s so snh v kinh t - k thut cc phng n la chn cao trnh bi ph hp, nu quai ln bin khi bi bi qu cao th vic khai thc bi sau khi quai gp kh khn, nht l vi mc ch m rng t nng nghip; nu quai khi bi bi cn qu thp th mc ri ro ln;

- Cao trnh thch hp nht tin hnh quai khi bi bi l ra cao trnh tng ng vi mc nc bin trung bnh;

- C th tin hnh quai vng bi c cao thp hn mc nc bin trung bnh, sau dng cc bin php k thut to nhanh qu trnh bi lng cho vng bi trong t mc tiu khai thc.

5.4.1.3. Cc tuyn ngn vng

Tuyn ngn vng c b tr trong tuyn chnh chia ton vng thnh cc v mi thnh nhiu mnh, thch hp vi iu kin t nhin v yu cu khai thc ca tng khu vc.

5.4.2. Tuyn vng bi bin xi

5.4.2.1. Yu cu chung

- i vi vng bi bin, b bin ang b xi, tuyn thng b ph hoi do tc ng trc tip ca sng vo thn, mi gy st st. Cn nghin cu k xu th din bin ca ng b, qu trnh h thp bi, c ch v nguyn nhn gy xi, cc yu t nh hng khc quyt nh phng n tuyn thch hp;

- Xem xt phng n tuyn cn gn lin vi vic nh gi kh nng tin hnh cc bin php chng xi, gy bi, n nh bi v b bin trc quyt nh;

Khi cha c bin php khng ch c hin tng b, bi bin xi th tuyn phi c quy m v v tr thch hp; ngoi tuyn chnh, cn xem xt b tr thm tuyn d phng, kt hp vi cc bin php phi cng trnh gim tn tht trong trng hp tuyn chnh b ph hoi.

5.4.2.2. Tuyn chnh

Theo yu cu cc mc 5.1. v 5.2. cn xt n cc yu t c th ca hin tng bin ln la chn v tr tuyn chnh:

- Nm pha trong v tr sng v ln u (cch mt chiu di sng thit k).

- Song song vi ng mp nc khi triu kit (mc nc triu ng vi tn sut 95 %).

5.4.2.3. Tuyn d phng

- Khong cch gia tuyn d phng v chnh t nht bng 02 ln chiu di sng thit k.

- Gia hai tuyn chnh v d phng nn b tr cc ngn, khong cch gia cc tuyn ngn nn bng 03 n 04 ln khong cch gia hai .

- Kt hp giao thng v cu h .

6. Xc nh cc tham s hi vn

Cc yu t c trng iu kin bin hi vn chnh phc v cng tc thit k bin bao gm: mc nc thit k, cc tham s sng khu vc nc su v ti chn cng trnh tng ng vi tn sut thit k.

6.1. Mc nc thit k

Mc nc thit k (MNTK) l mc nc tng hp bao gm t hp mc nc triu thin vn v cc thnh phn nc dng do cc yu t khc to ra tng ng theo tn sut thit k.

6.1.1. trc din vi binCc thnh phn chnh xc nh MNTK cho trc din bin gm: t hp mc nc triu thin vn v chiu cao nc dng do bo ng vi tn sut thit k v nh hng ca nc bin dng do bin i kh hu (nu c xt n). Cng thc tng qut xc nh MNTK nh sau:

Ztk,p = ZTB + (Atr+ Hnd)p

(1) Trong :

Ztk,p - Mc nc thit k bin ng vi tn sut thit k P% (m);

ZTB - Mc nc bin trung bnh ti khu vc d n quy v cao lc a (m); Hnd - Chiu cao nc dng do bo (m);

Atr - Bin triu thin vn trn mc nc bin trung bnh;

(Atr+ Hnd)p- T hp mc nc triu thin vn v chiu cao nc dng do bo tng ng vi tn sut thit k P%.

T cng thc tng qut (1), MNTK c tnh sn cho cc v tr dc b bin theo cc tn sut thit k khc nhau v th hin bng cc ng tn sut mc nc tng hp tra cu ti Ph lc A. Khi s dng cc ng tn sut mc nc tng hp ti Ph lc A cn lu :

- Cn c TCAT quy nh ti Bng 1 xc nh chu k lp li mc nc thit k cho ton khu vc d n;

- Nu v tr cn xc nh mc nc thit k khng trng vi v tr tnh sn th c php ni suy gia hai v tr lin k;

- Khi xt n nh hng ca nc bin dng (NBD), MNTK thit k c xc nh bng tng gi tr ca mc nc thit k tra t ng tn sut tng hp cng thm gi tr d bo gia tng mc nc bin trung bnh do nh hng ca nc bin dng (ZNBD) v c xc nh theo cng thc:

Ztk,p= MNTKp tra + ZNBD

(2)

Trong :

MNTKp tra - Mc nc bin tng ng vi tn sut P(%) tra theo ng tn sut mc nc tng hp ti Ph lc A.

ZNBD - Tr s gia tng mc nc bin trung bnh do nh hng ca nc bin dng, c xc nh nh sau:

ZNBD = Tct*RNBD

(3) Trong :

RNBD - Tc dng nc bin trung bnh (m/nm) theo kch bn NBD trung bnh quy nh bi B Ti Nguyn & Mi trng.

TCT - Tui th cng trnh d kin xy dng (nm); TCT c xc nh cn c vo tui th ca cng trnh v c quy nh bi cc c quan quyt nh u t v cc vn bn quy phm, php lut lin quan. Tui th ca c xc nh da vo cp v c quy nh ti Bng 2.

Bng 2. Quy nh v tui th ca cng trnh vnh cuCp Tui th (nm)

I-II100

III-IV50

V20

V d: Tc dng nc bin trung bnh vng bin min Bc nc ta l 0,006 m/nm. H thng c thit k bo v vng th thuc loi cng trnh cp III c tui th l 50 nm. Gi tr gia tng mc nc bin trung bnh do nh hng ca nc bin dng trong trng hp ny l:

ZNBD = 50 (nm) x 0,006 (m/nm) = 0.3 m.

6.1.2. bao quanh vng ca sng v m ph

Vic xc nh MNTK i vi bao quanh vng ca sng, m ph, cn phi k thm yu t nc dnh do nh hng kt hp ca nc l trong sng ra v nc pha bin truyn vo. Trong trng hp ny, cn phi s dng m hnh thy lc mt chiu xc nh mc nc kt hp ca hai yu t sng-bin ti v tr d kin xy dng cng trnh. iu kin bin cho m hnh thy lc mt chiu bao gm: Bin pha bin l mc nc pha bin tng ng vi tn sut thit k, xc nh theo Mc 6.1.1; bin pha sng l mc nc v lu lng l trong sng ng vi tn sut thit k.

6.2. Tham s sng thit k

6.2.1. Ti vng nc su (sng ngoi khi)

Tham s sng nc su bao gm: chiu cao sng c ngha v chu k sng (Hs, Tm) tng ng vi tn sut thit k v gc sng ti 0 ti khu vc nc su c nh hng trc tip n khu vc xy dng d n.

- Chiu cao sng v chu k sng thit k ti khu vc nc su c tnh ton sn cho tng vng dc theo ng b v c tra cu ti Ph lc B. Trong cn xc nh:

+ Vng bin ngoi khi nh hng trc tip n khu vc d n;

+ Chu k lp li hoc tn sut thit k;

+ Tra bng xc nh chiu cao v chu k sng thit k.

- Hng sng ti ti khu vc nc su l gc to bi gia phng php tuyn ng b v hng sng chnh ti khu vc d n. Trong thit k bin thng thng la chn trng hp bt li nht 0=00 (khng ), tng ng vi trng hp sng ti i vung gc (chnh din) vi on ng b.

6.2.2. Ti chn cng trnh

Chiu cao sng s dng trong cc tnh ton thit k mt ct ngang (nh sng leo, sng trn, n nh kt cu bo v mi, vv) l chiu cao sng ti c ngha Hs c xc nh ti v tr chn cng trnh do sng tng ng vi tn sut thit k ti khu vc nc su truyn vo (gi tt l sng thit k ti chn cng trnh).

Sng thit k ti chn cng trnh c xc nh bng cch truyn sng thit k t khu vc nc su vo n v tr xem xt.

- V tr chn cng trnh: c xc nh l v tr pha bin theo phng vung gc vi hng ng b, cch ng mp nc mt khong t L/2 n L0/4 theo phng vung gc vi ng b v pha bin.

Trong :

+ L: chiu di sng cc b ti chn cng trnh;

+ L0: chiu di sng vng nc su;

+ ng mp nc: L giao tuyn gia mt nc bin ti mc nc bin trung bnh vi mt bi trc hoc mt mi ;

- Tnh ton truyn sng: Sng truyn t khu vc nc su vo v tr chn cng trnh tri qua cc qu trnh gim nng lng sng do hiu ng nc nng, ma st y, phn x, nhiu x v sng . Khuyn ngh thit k s dng m hnh truyn sng mt chiu SWAN - 1D do trng i hc Cng ngh Delft, H Lan cung cp phn tch truyn sng v xc nh cc tham s sng thit k ti v tr chn cng trnh. Hng dn s dng m hnh SWAN 1D ti Ph lc H.

Tham s sng nc su thit k tra t cc ng tn sut sng nc su ti cc v tr vng b dc b bin, tra Ph lc B nh quy nh ti mc 6.2.1.

Ngoi ra, trong Ph lc B tnh sn kt qu cc gi tr sng thit k ti chn cng trnh cho cc v tr dc b bin. C th s dng cc gi tr ny tham kho, so snh hoc tnh ton trong giai on thit k c s.

Chiu cao sng thit k la chn cui cng m bo ln hn hoc bng gi tr chiu cao sng gii hn su, c xc nh theo cng thc kinh nghim sau:

Hs = ahct

(4)Trong :

a - H s kinh nghim, bng 0,5;

hct - su nc ng vi MNTK ti v tr chn cng trnh.

6.2.3. Tnh ton sng khi c rng ngp mn

Rng ngp mn vi h thng r, tn cy s tiu tn mt phn nng lng khi sng i qua. Sau khi sng truyn qua rng ngp mn, chiu cao sng s b suy gim. Tuy nhin, khi xc nh gim sng trong thit k bin, rng ngp mn cn phi p ng y cc iu kin bt buc sau:

- Rng ngp mn tn ti;

- Trng thi v cht lng rng ngp mn lun m bo n nh;

Chiu cao sng k n s trit gim do c rng ngp mn xc nh theo cng thc:

Hs = Kt. (1+().Hs,k(5)Trong :

Hs (m): Chiu cao sng thit k ti v tr cng trnh c xt n nh hng ca rng ngp mn.

Hs,k: Chiu cao sng thit k ti v tr cng trnh khi khng c rng ngp mn.

Kt.: H s trit gim sng (xc nh theo Hnh 1)

( = (0,1 n 0,3): H s k n sai s v m hnh (rng tha 0,1; rng trung bnh 0,2; rng dy 0,3).

H s gim sng Kt ph thuc vo chiu rng ca ai rng ngp mn (x) v trng thi ca rng ngp mn. Mt khc, mi trng thi rng ngp mn li c c trng bi mt gi tr ca tham s gim sng (r).

Mi tng quan gia Kt v r th hin qua cng thc:

Kt ( x) = e-rx

(6)

T kt qu kho st thc t v phn tch, xc nh c gi tr tham s gim sng (r) i vi cc trng thi rng ngp mn ti Bng 3.

Bng 3. Tham s gim sng (r)Trng thi RNMTham s gim sng r

Dy

Trung bnh

Tha0.010

0.007

0.004

Quan h v gi tr gia chiu rng ai rng ngp mn v h s gim sng c biu th ti Hnh 1.

Hnh 1. Quan h chiu rng ai rng ngp mn v h s gim sng

i vi rng dy, s dng ng s 1, rng trung bnh: ng s 2, rng tha: ng s 3.

Trng thi rng ph thuc mt , tn che ca mi loi rng (ph thuc vo chiu cao, ng knh tn, s cnh/cy...). Rng c chia thnh 3 trng thi: dy, trung bnh v tha ti Bng 4:

Bng 4. Trng thi rng ngp mn ng vi mt v tn che

Mt

(cy/ha) tn che rng (%)

1009590858075

20.000DyDy

16.000DyDyDy

12.000DyDyTrung bnhTrung bnh

8.000Trung bnhTrung bnhTrung bnhTrung bnhTrung bnh

4.000Trung bnhTrung bnhTrung bnhTrung bnhTrung bnhTha

3.000Trung bnhTrung bnhTrung bnhTrung bnhThaTha

2.000Trung bnhTrung bnhTrung bnhTrung bnhThaTha

1.500Trung bnhTrung bnhTrung bnhThaThaTha

1.000Trung bnhTrung bnhTrung bnhThaThaTha

GHI CH:

Mt (N): s cy trn mt hecta.

tn che (TC): t l (%) gia tng din tch hnh chiu cc tn cy trn b mt nm ngang v din tch mt t.

7. Thit k mt ct

7.1. Yu cu thit k mt ct- Thit k mt ct i vi tuyn mi, cng c, nng cp tuyn c v cc hng mc lin quan phi m bo cng trnh an ton, n nh vi iu kin bin thit k.

- Bo m yu cu v k thut - kinh t i vi mc tiu chnh v p ng yu cu ca cc mc tiu pht trin kinh t - x hi khc trong vng d n.

- Cc yu t chnh cn xem xt khi thit k mt ct gm: La chn mt ct, tnh ton xc nh cao trnh nh , thn v nn , dc mi , tnh ton n nh

7.2. Mt ct c trng

Mt ct c trng bin thng c 03 loi chnh:

- mi nghing;

- tng ng;

- hn hp (trn nghing di ng hoc trn ng di nghing).

Vic chn loi mt ct ph hp cn cn c vo iu kin a hnh, a cht, thu hi vn, vt liu xy dng, iu kin thi cng v yu cu s dng phn tch v quyt nh.

Mt s v d minh ho mt ct ngang bin ti Hnh 2 (tham kho).S MT CT BIN DNG TNG NG

S MT CT BIN B TR C HAI PHA

S MT CT BIN DNG MI NGHING

S MT CT BIN BO V 3 MT

S MT CT BIN DNG HN HP

Hnh 2. Mt s mt ct bin c trng

7.3. Xc nh cc tham s thit k mt ct

7.3.1. Cao trnh 0nh

7.3.1.1. Cng thc tng qut

Zp = Ztk,p + Hlk + a

(7) Trong :

Zp - Cao trnh nh thit k (m);

Ztk,p - Mc nc thit k (MNTK); Hlk - cao lu khng;

a - Tr s gia tng cao.

Tnh ton xc nh cc thnh phn trong cng thc (7) nh sau:

7.3.1.2. Mc nc thit k (Ztk,p): MNTK xc nh theo mc 6.1.

7.3.1.3. cao lu khng (Hlk)

a) trc din vi bin, khng cho php sng trn

cao lu khng (Hlk) c xc nh l khong chiu cao t MNTK n v tr m sng thit k leo trn mi , quy nh l chiu cao sng leo 2% do sng thit k gy ra Rsl2%, p (c ngha l cho php 2% s con sng thit k c trn qua nh , tng ng vi lu lng sng trn rt nh v c coi nh sng khng trn qua nh ). cao lu khng c xc nh theo cng thc:

Hlk = Rsl 2%, p

(8)Trong :

Hlk - cao lu khng ca nh trn MNTK.

Rsl 2%, p - Chiu cao sng leo, c xc nh ti Ph lc C.

b) trc din vi bin, cho php sng trn

Trng hp ny, cc yu t tc ng tng t nh Mc a, tuy nhin cao lu khng (Hlk) c xc nh cao khng ch lu lng sng trn qua nh nh hn lu lng sng trn cho php thit k [q] (l/s/m) v c xc nh theo cng thc:

Hlk = Rc,q

(9)

Rc,q - cao lu khng ca nh trn MNTK khng ch lu lng sng trn khng ln hn gi tr lu lng sng trn cho php [q] (l/s/m) trong iu kin thit k. cao lu khng theo tiu chun sng trn c xc nh ti Ph lc C.

[q] -Lu lng trn cho php thit k (l/s/m) tra theo Bng 5. Gi tr [q] ph thuc vo bn chng xi ca cc hnh thc bo v nh , mi pha ng v mc thit hi ca khu vc pha ng do nc trn vo.

Bng 5. Quan h lu lng trn cho php qua nh v gii php bo v pha ng

Hnh thc v cht lng lp bo v mi pha ngLu lng trn cho php

[q] (l/s/m)

Khng c bo v0,1

Trng c cht lng tt, ng nht10

Bng lt khan, c tng lc20

Bng cu kin b tng lp ghp c tng lc30

LU :

- Trng hp s dng loi kt cu khc, n v t vn phi chng minh v bn v cp lu lng trn cho php la chn hoc c tin hnh nghin cu thng qua m hnh th nghim khng nh c tin cy trc khi p dng.

- Trong trng hp thit k chu sng trn, ty theo ln ca lu lng sng trn cho php, thit k cn phi xem xt mc chp nhn thit hi ca khu vc pha ng do nh hng ca nc trn qua nh v b tr cc gii php thu, tiu nc trn ph hp.

7.3.1.4 Xc nh cao trnh nh khi kt hp cho php thot l ni ng

i vi nhng d n c nhim v va phi p ng yu cu ngn mn, va phi p ng yu thot l chnh v t pha ni ng ra bin/ca sng, cao trnh nh c xc nh nh sau:

Z = Ztk + a

(10)Trong : Ztk v a gii thch mc 7.3.1.1

Trng hp bao quanh vng c yu cu thoat l ni ng (hay cho php thot l ni ng) th cn phi gia c 3 mt bo m bn chng xi do nc trn qua i vi chn , mi pha bin, mt v mi pha ng, tham kho Hnh 3.

Trong trng hp ny cn c bit lu rng khi c h thng s ngn cn kh nng thot l t nhin ca vung c nbo v. V vy, yu cu bt buc khi b tr thit k tuyn l phi tnh ton tng lng nc l ni ng cn tiu thot v b tr h thng thu, gom, tiu thot nc l ni ng tng ng vi quy m tuyn d kin xy dng.

Hnh 3. Mt ct bo v ba mt

Phn ln phi gia c 3 mt l cc tuyn ven m ph, ven ca sng min Trung (t Qung bnh n Bnh thun).

7.3.1.5 Xc nh tr s gia tng cao

Tr s gia tng cao c xc nh theo cp , tra Bng 6.

Bng 6. Tr s gia tng cao ca binCp IIIIIIIVV

Tr s gia tng cao a (m)0,60,50,40,30,2

GHI CH:

Tr s gia tng cao trn cha bao gm cao ln ban u, ln c kt thn, nn v mc nc bin dng phi ng ph do nh hng ca bin i kh hu.

7.3.2. Tnh ton kch thc, kt cu mt ct

7.3.2.1. Mt

a) Chiu rng: Chiu rng mt c quy nh theo cp , tra Bng 7.

Bng 7. Chiu rng mt theo cp cng trnh

Cp IIIIIIIVV

Chiu rng mt B (m)6 86543

Trng hp mt kt hp lm ng giao thng, ng du lch hoc ng phc v cc ngnh kinh t khc th chiu rng mt c th m rng v phi ph hp v quy hoch, c c quan c thm quyn quyt nh. b) Kt cu mt

- Trng hp khng c tng nh: Mt nh cn dc v mt pha hoc hai pha; b tr g an ton hai bn vi chiu cao t 0,2 0,3 m, phn on vi khong cch t 0,5 1,0 m m bo an ton cho cc hot ng trn mt v b tr h thng thot nc v mi pha ng.

- Trng hp c tng nh:

+ Ch la chn gii php tng nh trong trng hp tuyn vng d n b hn ch bi vic m rng mt ct ngang so vi cao trnh nh thit k.

+ Chiu cao tng tnh t mt tr ln khng cao qu 1,0 m v phi b tr khe ln, khong cch gia cc khe ln t 10 m n 20 m. Mng tng nh phi c lp vi kt cu bo v mi ; cao trnh y tng nh b tr cao hn mc nc thit k; tng nh cn c tnh ton n nh theo cc tiu chun hin hnh.

+ Cao y tng nh phi t cao hn mc nc thit k.

+ nh tng c th t mp pha trong hoc pha ngoi ca mt ty theo yu cu k thut v mc ch s dng mt . Trng hp b tr tng nh pha trong, mt c tc dng nh mt thm gim sng leo hoc sng trn. Trng hp mt kt hp ng du lch th tng nh phi b tr pha ngoi.

i vi mi, nu kt hp lm ng giao thng cao tc th nn b tr ng c pha ng hoc chn pha ng va tng n nh cho , va m bo giao thng khi c bo v va to iu kin nng cao thch ng vi nh hng ca bin i kh hu khi cn thit. Cp v kt cu ng tun theo cc tiu chun k thut v ng giao thng (tham kho TCVN 4054-2005).

7.3.2.2. Thn

a) Vt liu t p

- Tn dng ti a t ln cn cng trnh. i vi t ng cht, nn chn t st c hm lng st 15% n 30%, ch s do t 10% n 20%, khng cha tp cht. m t khi p khng nn vt qu 3% m ti u.

- Khng nn dng t bn bi tch, t st c hm lng nc t nhin cao v t l ht st qu ln, t trng n, t c tnh phn tn p . Trong trng hp phi s dng th cn c gii php k thut ph hp.

- Nu ngun t p ch c ct ht ri, thnh phn ht mn nh hn 25%, th phi c lp bc bo v (c th s dng lp t tht vi chiu dy khng nh hn 0,5m).

b) cht ca thn

i vi t c tnh dnh:

(11)

Trong :

Kc - cht thit k.

- Dung trng kh thit k ca t thn .

- Dung trng kh cc i, c xc nh trong phng th nghim.

i vi t khng c tnh dnh: (12)

Trong :

Kds - cht tng i thit k.

eds - H s rng cht thit k.

emax. - H s rng cc i tiu chun. emin - H s rng cc tiu tiu chun.

cht thn bng t quy nh trong Bng 8.

Bng 8. Quy nh cht thn bng t

Cp III v IIIIV v V

Kc 0,94 0,92 0,90

Kds 0,65 0,62 0,60

c) Nn v gii php k thut x l nn t yu

Nn phi bo m n nh (ng sut v bin dng, thm, ..) di tc dng ca cc loi ti trng tc ng v dng thm. Trng hp nn i qua vng t yu cn thit k gii php x l ph hp nh dng b phn p, thay nn t yu, s dng vi a k thut gia c nn hoc mt s gii php khc. Tnh ton thit k, gia s nn phi ph hp tiu chun, quy chun k thut quc gia hin hnh.

7.3.2.3. Mi

a) dc mi

dc mi m = cotg, vi l gc gia mi v ng nm ngang, c xc nh thng qua tnh ton n nh, c xt n bin php thi cng, kt cu gia c mi v yu cu s dng.

Thng thng ly m = 2,0 n 3,0 cho mi pha ng v m = 3,0 n 5,0 cho mi pha bin i vi c p bng t.

b) C gim sng pha bin

Yu cu k thut i vi c pha bin - thm gim sng, xem quy nh ti mc 7.3.5.3.

c) C pha ng

Khi c chiu cao ln hn 6m, dc mi m < 3,0 v yu cu giao thng c th b tr c v tr cch nh t 2m n 3m, chiu rng ca c ty thuc vo yu cu giao thng, nhng khng nh hn 5m. Thng mi pha di thoi hn mi pha trn c.

d) Chn pha ng

Thit k ng hnh lang chn phc v dn sinh, chng vi phm theo quy nh ca Lut iu, chiu rng hnh lang khng nh hn 5,0 m. Thng thng hnh lang chn pha ng c trng c chng xi. Trng hp cho php sng trn qua nh i vi sng trn thit k th gia c hnh lang chn pha ng kt hp vi thit k h thng thot nc trn qua nh .

H thng tiu thot nc trn qua nh bao gm cc rnh tiu nc dc, ngang; rnh dc thng c b tr mi, c, chn ; rnh ngang c b tr vung gc vi tim v cch nhau khong 50m. Kt cu bng b tng, gch xy hoc xy v.v kch thc v dc y ca rnh cn tnh ton trong trng hp lu lng sng trn ln hn 10 (l/s/m). Cc trng hp cn li b tr theo kinh nghim.

Knh thu nc sng trn, nc ma phi c b tr c lp, khng kt ni vi h thng knh tiu, ti trong ng, m bo khng xm nhp mn vo khu vc dn c, nng nghip, nui trng thy sn.

e) Chn pha bin

Chn pha bin cng l chn k bo v mi pha bin c th hin mc 7.3.5.4.

f) Cng trnh ct qua thn

Cng trnh ct qua thn phi thit k ring theo cc quy chun, tiu chun chuyn ngnh lin quan i vi tng loi cng trnh (cng, cu, trn, u thuyn). c bit ch x l ni tip gia thn v cng trnh, m bo an ton cho v cng trnh.

7.3.3. Tnh ton n nh

7.3.3.1. Ni dung tnh ton

- n nh chng trt mi ;

- n nh dng tng ng.

- Ln thn v nn .

7.3.3.2. Tnh ton n nh chng trt mi

- Chn mt ct tnh ton: ty theo c im ca tuyn , la chn mt s mt ct c tnh cht i din tnh ton n nh.

- Cc trng hp tnh ton

+ Trng hp c bn:

Tnh cho mi pha ng khi mc nc pha bin l MNTK, mc nc pha ng l mc nc thp nht (nu c);

Tnh cho mi pha bin: Mc nc pha bin rt nhanh t MNTK ti mc nc thp; b qua p lc sng ln mi pha bin.

+ Trng hp c bit: Mi pha ng v pha bin ang trong thi k thi cng, chu ti trng thit k.

- Phng php tnh ton: Theo tiu chun Thit k p t m nn TCVN 8216:2009 v cc quy chun, tiu chun k thut c lin quan.

- H s an ton chng trt K: c quy nh trong Bng 9.

Bng 9. H s an ton n nh chng trt cho mi

Cp

T hp ti trngIIIIIIIVV

C bn1,301,251,201,151,10

c bit1,201,151,101,051,05

- i vi p trn nn t yu s dng h s an ton chung cho cc cp cng trnh, tnh ton n nh theo trng thi cn bng gii hn vi ti trng tnh ton tiu chun v t nn dng sc khng ct tiu chun.

+ Tnh ton cho trng hp vn hnh lu di: K min = 1,4

+ Tnh ton cho trng hp thi cng:K min = 1,2

7.3.3.3 n nh dng tng ng

Cn tnh ton n nh chng trt phng; n nh chng lt; n nh ca t nn v n nh chng trt tng th.

a) n nh chng trt phng

+) Trng hp khng c lc dnh kt trn mt trt

H s n nh chng trt phng ca tng theo mt y lp tip xc:

(13)

Trong :

G - Hp lc theo phng thng ng tc dng ln y tng (kN);

g - Trng lng vt liu ca lp m v khi phn p trong phm vi y tng (kN);

f - H s ma st: H s ma st theo mt tnh ton, ly theo Bng 10. PE - p lc t b ng trn mt EE (kN);

P - Hp lc theo phng ngang tc dng ln y tng (kN);

Bng 10. H s ma st

Vt liu mt tip gip tng - nnH s ma st f

B tng v b tng0,55

xy v xy0,65

hc v hc0,70

B tng v hc (b mt sa phng bng dm)0,60

xy v hc (b mt sa phng bng dm)0,65

v nn ct th, ct mn0,50 0,60

v nn ct bt0,40

v nn t ct0,35 0,50

v nn st, st0,30 0,45

+ Trng hp c lc dnh kt trn mt trt

H s n nh chng trt theo theo mt y lp m nh sau:

(14)

Trong :

(o - Gc ma st gia y tng v nn; Co - Lc dnh kt n v trn mt trt;

A - Din tch y mt trt.

- H s an ton chng trt phng K:

+ i vi cc cng trnh b tng hoc xy c y tip xc vi nn phi nham thch: h s an ton chng trt phng quy nh trong Bng 11.

Bng 11. H s an ton n nh chng trut trn nn phi nham thch

Cp cng trnh


C bn1,351,301,251,201,15

c bit1,201,151,101,051,05

+ i vi cc cng trnh b tng hoc xy c y tip xc vi nn nham thch: h s an ton chng trt phng quy nh trong Bng 12.

Bng 12. H s an ton n nh chng trt trn nn nham thch

Cp cng trnh


C bn1,151,101,101,051,05

c bit1,101,051,051,001,00

b) n nh chng lt

Kim tra n nh lt ca tng v pha bin theo s tnh ton n nh dng tng ng (Hnh 4). Tnh ton n nh ca tng theo nguyn l ca tng chn t.

Hnh 4. S tnh ton n nh dng tng ng

H s n nh chng lt thn tng: (15)

Trong :

Kat - H s an ton n nh chng lt tnh ton ly bng h s an ton n nh cho php tra theo Bng 13.

MC - M men chng lt, tnh ton vi tm lt B trng hp mc nc pha bin thp v mc nc ngm pha ng cao; tm lt C trng hp ang thi cng, cha p t pha lng tng v mc nc pha bin l MNTK.

MG - M men gy lt.

Bng 13. H s an ton n nh chng ltCp cng trnh


C bn1,61,51,51,31,3

c bit1,41,31,31,21,2

GHI CH:

- T hp ti trng c bn l ti trng trong iu kin cng trnh lm vic bnh thng.

- T hp ti trng c bit l ti trng trong iu kin thi cng hoc khi c ng t.

- Cc gi tr h s an ton thit k khng c vt qu 20% i vi iu kin ti trng c bn v 10% trong iu kin ti trng c bit.

7.3.4. Tnh ton ln

Phi xc nh ln tng cng ca thn v nn v tr ng tim dc v cc v tr cn thit khc cc mt ct i din cho cc on .

Ln nn bao gm 2 thnh phn chnh: ln ban u v ln c kt. Ln ban u l ln gy ra ngay sau khi gia ti. Ln c kt l ln gy ra do tc dng ca ti trng ngoi theo thi gian.

7.3.4.1. Tnh ton ln ban u

Tr s ln ban u Si c tnh ton theo cng thc (16)

(16)

Trong :

P - p lc phn b u trn nn bin, (KN/m2).

B - Kch thc cnh ngn ca nn , (m).

( - H s Poisson ca t (i vi t bo ho, ( = 0,5).

E - Mun n hi ca t nn (KN/m2), xc nh thng qua th nghm ct khng thot nc 3 trc hoc th nghim nn n trc.

( - H s nh hng, c th tham kho tr s trong Bng 14.

Bng 14. H s nh hng

T l di rng ca nn L/BTr s ( i vi nn c tnh do

im giaim gcTrung bnh ton nnTr s ( i vi nn cng trung bnh ton nn

21,530,771,30Hi nh hn so vi tr s ca nn c tnh do

31,780,891,52

52,111,051,83

102,581,292,25

1004,02,03,70

Khi khng c s liu v tr s E, ln ban u c th tnh theo cng thc (17)

(17)

So - Tng gi tr ln khi cc bn khng chuyn dch ra ngoi na, sau khi hon tt cht ti.

7.3.4.2. Tnh ton ln c kt

Gi tr ln c kt Sc tnh ton theo cng thc (18)

(18)

Trong :

e 1j - h s rng khi nn n nh di tc dng ca trng lc ca lp t th j.

e 2j - h s rng khi nn n nh di tc dng ca ng lc t l ca lp t th j v ng lc ph gia.

hj - Chiu dy lp t th j, (m).

Sj - Lng nn p ca lp t th j (m).

i vi p trn nn t yu th tnh ht cc loi ln bao gm cc ln tc thi, c kt s cp v ln th cp, phng php tnh tham kho sch chuyn ngnh.

i vi p trn nn t yu thi gian tnh ln bng khong thi gian t khi thi cng xong n thi im nng cp nh k, khong thi gian ny do ch u t quyt nh (khng nn di 15 nm).

ln cho php theo thi gian i vi cng trnh trn nn t yu nh sau Bng 15:

Bng 15. ln cho php

V tr on p trn t yu

Gn m cuCh c cng di Cc on nn p thng thng

10cm 20cm 30cm

7.3.5. Thit k k bo v mi

K bo v mi bin thng c gi l k bin. Kt cu k bin bao gm ba phn: thn k, chn k v nh k.

7.3.5.1 Yu cu vt liu v hnh thc, iu kin p dng kt cu thn k

a) Yu cu vt liu:

Vt liu lm k bo v mi bin cn p ng cc iu kin sau:

+ m bo n nh di tc ng ca sng thit k;

+ m bo bn di tc dng xm nhp mn;

+ m bo thot nc qua lp bo v;

+ Thun tin trong thi cng, vn chuyn, lp t, sa cha v thay th;

b) Hnh thc kt cu v iu kin p dng: La chn hnh thc kt cu thn k (Kt cu bo v mi) ph thuc vo ti trng tc ng, cc yu cu v kinh t, k thut, iu kin thi cng, yu cu s dng quyt nh. Bng 16 nu tm tt mt s loi kt cu k ph bin v iu kin p dng. Trn thc t, thit k c th p dng a dng cc hnh loi kt cu bo v khc nhau (khc so vi Bng 16), nhng khi cn phi c nghin cu, kim nghim v tnh an ton, n nh ca kt cu trc khi p dng.

Bng 16. Dng kt cu bo v mi v iu kin s dngTTKt cu lp gia c miiu kin p dng

1Trng c- Sng c Hs 0,5m, dng chy c V < 1m/s hoc c rng phng h trc

- Mi ph hp c pht trin

2 hc th ri- Ni c ngun phong ph

- Mi thoi, t yu cu m quan

3 hc lt khan- Ni c ngun phong ph, c loi tuyn chn p ng yu cu thit k

4 hc xy- Mi m nn cht lng tt

- Sng nh, dng chy mnh, loi ri sn c c kch thc khng p ng c yu cu thit k

5Thm r - Kch thc khng p ng yu cu thit k

- Sng ln, c dng chy mnh

- C loi r thp chu mn

6Cu kin b tng c sn, ghp ri- Sng ln

- Nn mi cht lng t trung bnh n tt

- Yu cu m quan

7Cu kin b tng c sn, lin kt mng.- Sng trung bnh, dng chy mnh

- Yu cu m quan

- Nn mi n nh chng ln tt

- C iu kin thi cng v ch to mng

8Cu kin cht lng cao

(v d nh Basalton, Hydroblock);- Sng ln

- Nn k (thn ) c cht lng t trung bnh

- Yu cu m quan

9Hn hp nhiu loi- Mc nc dao ng ln, mi gia c di

- Yu cu s dng khc nhau

7.3.5.2 Xc nh kch thc kt cu bo v mi k

- Kch thc c bn ca kt cu thn k l chiu dy ti thiu vt liu lm k (vt liu bo v mi) theo phng vung gc vi mi v trng lng yu cu ca tng cu kin/ khi vt liu. Cn p ng cc iu kin sau:

+ m bo n nh di tc ng ca sng thit k;

+ m bo bn di tc dng ca ngoi lc v xm nhp mn;

+ Thun tin trong thi cng, vn chuyn, lp t, sa cha v thay th;

- Chiu dy ca vt liu bo v mi c xc nh theo cng thc Pilarczyk (1998):

(19)

Trong :

( - H s n nh biu th cho ngng chuyn ng/n nh ca vt liu.

H s n nh ( cho cc h thng ct liu dng ri di tc dng ca sng, c xc nh theo cng thc ca Van der Meer (1984):

(20)

Vi:

Pb- H s phn nh kh nng thm/thot nc ca thn v nn k; thng chn Pb = 0,1 i vi k bo v mi ;

Sb- Tham s h hng ban u, c th ly bng 0.5 n 2.0 i vi cu kin b tng c sn xp c lp v bng 3 vi lt khan, ri;

N- S con sng ti cng trnh trong mt trn bo;

Trong :

Tb: thi on bo (gi), thng trong khong t 4 n 6 gi; Tm : Chu k sng trung bnh.

(p - Ch s sng v Iribarren ng vi chu k nh ph sng Tp;

(21)

Cng thc ny c th p dng vi (p 3 (iu kin sng v). Trng hp (p > 3 vn c th s dng cc kch thc c tnh vi trng hp (p = 3 ; Vi:(- Gc nghing ca mi dc (mi k) ();

Hs - Chiu cao sng thit k ti chn cng trnh (m); trng hp, s dng cc gii php gim sng trc , bi c rng cy chn sng th phi k n h s trit gim sng;

D - Kch thc (chiu dy) c trng ca cu kin bo v;

(m - T trng tng i ca vt liu lm cu kin bo v mi, kiu cu trc bo v;

D v (m c xc nh theo cc h thng c trng nh sau:

* :

(22)

Trong : M50: Khi lng trung bnh theo ng cp phi ti m

(b: Khi lng ring ca

* Khi bo v: D = chiu dy ca cu kin bo v (m = ( ;

* Thm bo v: D = d = chiu dy trung bnh ca lp thm bo v;

(23)

Vi: n - rng th tch ca vt liu;

( - T trng tng i ca vt liu.

i vi vt liu hc (khai thc m) thng thng:

(24)

b- H s m c lin quan n s tng tc gia sng v loi mi k ( nhm, rng/tnh thm v.v...) (0,5 b 1,0);

+ b = 0,5: vi mi k bng c nhm, thm nc;

+ b = 1: vi mi k bng cc khi xp nhn v t thm nc;

+ b 2/3: gi tr i din thng dng cho cc h thng khc (cu kin trung bnh) v d nh cc khi dng h v cc lp m khi, thm bo v c thit k c bit);

(u- H s cht lng n nh mi k, xc nh theo loi kt cu bo v tra ti Bng 17;

Bng 17. H s cht lng n nh mi k ( (u )Loi kt cu bo v mi kH s cht lng n nh mi k

( (u )

K 2 lp (gi tr chun)1,0

K t nhin cht lng km (kch thc khng ng u);1,0

K t nhin cht lng tt (kch thc ng u);1,5

Cu kin cht lng cao (Basalton, Hydroblock);2,0

nha thm nhp;2,0

Cu kin r ;2,5

Lin kt mng2,5

Khi s dng cc cu kin bo v mi dng khc so vi nu ti Bng 17, yu cu thit k phi chng minh c n nh yu cu v tnh tin cy ca cc cu kin thng qua nghin cu th nghim m hnh t l ln hoc th nghim thc t v c c quan qun l cng nhn.

7.3.5.3.C pha bin

C pha bin - thm gim sng nhm gim chiu cao sng leo, tng cng n nh cho thn , thng c b tr vng c sng ln.

Cao trnh c ngang cao trnh mc nc thit k s t hiu qu gim sng ln nht.

Chiu rng c ti thiu bng 3,0m; bng hoc ln hn 1,5 ln chiu cao sng nhng khng vt qu chiu di sng nc su (Bc 0,25L0).

B tr cc m gim sng v dc v pha bin t 1/15 n 1/20 gim chiu cao sng leo, tiu tn nng lng sng. gim sng leo do tc ng ca c c xc nh theo Ph lc C

i vi nhng tuyn bin quan trng, quy m ln, cao trnh v kch thc c gim sng c th xc nh thng qua th nghim m hnh.

7.3.5.4.Chn k pha bin

Vic tnh ton kch thc, la chn kt cu chn k phi cn c vo cc yu t gy xi chn cng trnh gm: sng v (gn chn cng trnh), sng leo v dng rt trn mi , sng phn x, tnh cht c l ca bi trc ; vt liu bo v mi, bi trc la chn kt cu ph hp. Thng thng c 02 loi kt cu chn k: chn k nng; chn k su.

a) Chn k nng

- iu kin p dng: Chn k nng c p dng cho vng bi, ch chng tc ng ca sng v dng chy do sng to ra.

- Hnh thc p dng:

+ Thm ph: c b tr ni hoc chm, chiu dy bng (1 2) ln chiu dy lp bo v mi pha trn i vi thm ph ni v (2 3) ln i vi thm ph chm;

+ M : L hnh thc kt hp gia kt cu thm ph ni v thm ph chm, ph hp vi khu vc c cao trnh bi thp;

+ Thm chn trong t: thng c ng dng cho khu vc c cao trnh bi cao, i vi bi thp nn s dng lng th hoc cu kin b tng c sn. su c xc nh theo iu kin a hnh bi, chiu cao sng, dng chy v.v

+ Thm hoc r xp: C tc dng y h xi ra xa chn k, lm gim nguy c xi l chn k cng nh mi pha bin. Chiu di thm phi bng (3 4) ln chiu cao sng c ngha trc chn cng trnh i vi kt cu thm ni v (2 3) ln i vi kt cu thm chm.

Mt s dng chn k nng ph bin c minh ha trong Hnh 5.

Hnh 5. Mt s dng chn k nng

b) Chn k su

- iu kin p dng: Chn k su c p dng cho vng bi bin b xm thc mnh, bo m n nh cho chn k khi mt bi b xi su.

- Hnh thc p dng:

+ Cc c hay bn c bng g, b tng, b tng ct thp hoc c vn thp, kt hp vi lng th bng hc;

+ ng buy bng b tng ct thp hnh lc lng (kiu chn k HWRU-TEO - 2001 mt hoc nhiu tng so le) kt hp vi li v lng th bng hc;

+ Hn hp;

Mt s dng chn k su ph bin c minh ha trong Hnh 6.

Hnh 6. Mt s dng chn k su

c) su xi ti hn

su xi ti hn ca chn k pha bin ph thuc vo nng lng sng v a cht nn, c tnh ton theo cng thc kinh nghim sau:

Smax = 1,5Hs(25)Trong :

Smax - Chiu su h xi cn bng (m);

Hs - Chiu cao sng thit k (m);

Ls - Chiu di sng thit k (m);Cn c chiu su h xi quyt nh phm vi gia c chn k. Nu bo v chn k theo phng ng, su bo v ti thiu bng 1,25 ln chiu su h xi. Nu bo v theo phng ngang, b rng lp bo v ti thiu bng t 3 n 4 ln chiu cao sng thit k ti chn cng trnh. Nu kt hp cc hnh thc trn, ty theo tng trng hp c th quyt nh.

Ngoi vic tnh ton xi ti hn do nh hng ca sng nh cng thc nu trn, i vi khu vc d n cn b xi l do nh hng ca dng ven, mt cn bng bn ct nhng khu bin tin, cn iu tra qu trnh din bin xi bi ca bi v vng ln cn quyt nh la chn chiu su h xi ph hp, m bo n nh chn k lu di.

d) Kch thc vt liu

Vt liu bo v chn k thng thng bng hc, trng lng vin phi ln n nh trc tc ng ca cc ngoi lc, c bit i vi dng chy rt xung khi sng leo ln mi.

Trng lng n nh ca vin gia c chn k (G) ph thuc vo vn tc cc i ca dng chy do sng to ra chn k v c tra theo Bng 18.

Bng 18. Khi lng vin bo v chn k theo Vmax

Vmax (m/s)2,03,04,05,0

G (kG)4080140200

Trong , Vmax l vn tc cc i ca dng chy do sng to ra chn k c xc nh theo cng thc sng ng ca Izbas:

(26)

Vmax - Vn tc cc i ca dng chy (m/s).

Ls, Hs - Chiu di v chiu cao sng thit k ti chn cng trnh (m).

h - su nc ti v tr nh chn k (m).

g - Gia tc trng lc (m/s2).

Chiu di sng thit k (Ls) c th xc nh theo Bng tra cc tham s sng ca Wiegel (1964);

Lu :

- Trong khu vc nc nng (h/L < 0,05), chiu di sng thit k c th c tnh theo cng thc:

(27)

- Khi s dng B ng 18 trn c th ni suy hoc ngoi suy cc gi tr khi lng vin (G) t cc gi tr vn tc Vmax tnh c cn c vo cc s liu cho trong bng.

7.3.5.5. Thit k kt cu nh k

a) i vi c tng nh: Phn tip gip gia thn k v tng nh l nh k (Hnh 7 )

Hnh 7. Cc dng kt cu nh k c tng nh

b) i vi khng c tng nh:

nh k l phn tip gip vi g an ton pha bin, thng c thit k cu to ph thuc kt cu mt .

7.3.5.6. Thit k tng lc

a) Tng lc bng ct liu ri

Thit k tng lc ht cn c thc hin theo trnh t v cc yu cu k thut tng t nh trong TCVN 8216:2009 - "Thit k p t m nn" v TCVN 8422:2010 - "Cng trnh thu li - Thit k tng lc ngc cng trnh thu cng". Thnh phn ht cc lp ca tng lc cn bo m cc iu kin sau:

+ Tnh n nh bn ngoi:

(28)+ Tnh n nh bn trong:

(29)+ Tnh thm:

(30)Trong :

dF -ng knh ht lp lc.

dB -ng knh ht t nn.

- Chiu dy ca mi lp lc d0 c xc nh theo cng thc:

d0= 50.d15

(31) Hoc ly theo kinh nghim:

+ Lp trong: d02= (1015) cm;

+ Lp ngoi: d01= (15 20) cm;

b) Tng lc bng vi a k thut

Vi a k thut c kh nng: ngn cch, lc, gia c, dn v thot nc, v c thit k tip gip vi thn . Cc tiu chun chnh cho vic la chn vi a k thut l:

- Vi c kh nng chng h hng trong thi cng v lp t.

- Lc khng xuyn thng ca vi a.

- Vi c cc c im thch hp v lc ngc v thot nc.

- bn cao khi tip xc vi nh sng.

Khi thit k cn phi la chn loi vi vi cc tiu chun k thut ph hp v cp phi ca t p thn , p ng cc yu cu v thot nc v gi t, ng thi cn phi kim tra n nh trt theo b mt ca lp lc

Tng lc bng ct liu ri hoc bng vi a k thut u p dng cho c thn, chn v nh , k.

8. Cng trnh bo v bi, gim sng

Bi trc bin gi vai tr ht sc quan trng i vi s an ton ca , cn c theo di, bo v. c bit l khu vc bi trc ang b xm thc; cc gii php bo v bi gm:

- Trng rng phng h trc gi bi v gim sng.

- Xy dng h thng m hn, tng gim sng, ...

- Nui bi nhn to.

8.1. Trng rng phng h

8.1.1. Tc dng v yu cuRng phng h ven bin l mt b phn cu thnh ca cng trnh bin, c tc dng gim chiu cao sng trc chn , tng kh nng lng ng ph sa bo v bi, bo v mi trng sinh thi...

Cc yu cu khi thit k rng phng h ven bin:

- Xc nh phm vi;

- Phn tch tnh hnh th nhng, thy vn, hi vn v a hnh vng bi thuc d n.

- Xc nh chng loi cy, kch thc v thi v trng thch hp.

- Bin php bo dng, chm sc v ngn chn tc ng ngoi mun i vi yu cu sinh trng pht trin ca cy trng.

- Xc nh mc gim chiu cao sng trc .

8.1.2. Thit k trng cy

8.1.2.1. Trng mi

Cy c trng thnh cc hng song song vi b bin v b tr so le nhm t hiu qu chn sng ti u. Ty theo, yu cu gim sng v trng thi rng thit k mt trng thch hp (Bn chua, Bn trng: 1.600 - 5.000 cy/ha; Mm trng, Mm en, Mm bin: 2.500 - 10.000 cy/ha; c: 2.500 - 10.000 cy/ha; Da nc: 2.500 - 4.400 cy/ha; Trang: 2.500 - 10.000 cy/ha; Tra: 1.600 - 4.000 cy/ha).

8.1.2.2. Trng b sung:

i vi bi pha bin c rng cy, song mt , kch thc ca rng cy cha p ng c yu cu gim sng, cn la chn loi cy ph hp trng b sung.

Lu : Khi thit k trng phng h trc cn b tr li ra, vo cho tu, thuyn (thng rng t 50-100m) v khong cch vi b (t 10-15m) ngn gia sc ph hoi cy.

8.1.3. Xc nh h s gim sng

H s gim sng do c h thng rng ngp mn trc c xc nh nh ch dn ti mc 6.2.3.

8.1.4 Xc nh chiu rng ca ai rng ngp mn

Quan h v gi tr gia chiu rng ai rng ngp mn v h s gim sng c biu th ti (Hnh 8).

Hnh 8. Quan h chiu rng ai rng ngp mn v h s gim sng

Hnh 8 th hin gi tr h s gim sng Kt tnh ton vi nhiu gi tr v chiu rng ca ai rng ngp mn cc trng thi rng khc nhau trong thc t. C th thy rng ng biu din tng quan ca h s gim sng v chiu rng ai rng ngp mn tng ng vi tnh ton ca Quartel (2007). i vi rng dy, s dng ng s 3; rng trung bnh: ng s 2; rng tha: ng s 1.

Nh vy, vi cc trng thi rng ngp mn sn c (rng dy, trung bnh hoc tha), ta c th xc nh c gi tr h s gim sng Kt tng ng chiu rng ca di rng ngp mn nht nh, phc v cho vic thit k bin ti khu vc .

- Ngoi vic s dng dng th ca Quartel thit k ai rng ngp mn (vi cc trng thi rng c), trong nhng trng hp nht nh cn c th s dng theo th cc Hnh 9, 10 v 11. Cc th ny biu din mi quan h gia h s gim sng vi b rng ca ai rng ngp mn cc iu kin cy rng c chiu cao vt ngn (Hvn:m), mt (N: cy/ha) v tn che (TC: %) khc nhau, trong khi c nh cc iu kin khc.

Hnh 9: Chiu rng ai cy ngp mn yu cu v h s gim sng tng ng (mt N = 10.000 cy/ha v tn che TC = 80%).

Hnh 10: Chiu rng ai cy ngp mn yu cu v h s gim sng tng ng (chiu cao vt ngn ca cy Hvn = 4m v tn che TC = 80%).

Hnh 11: Chiu rng ai cy ngp mn yu cu v h s gim sng tng ng (mt N = 10.000 cy/ha v chiu cao vt ngn ca cy Hvn = 4m).

H s gim sng tra trn cc ng quan h t kt qu tnh ton v o c mt s hin trng i din cho cc vng d n.

Cc ch dn chi tit v s dng gii php trng rng ngp mn xem thm Ph Lc E.

8.2. Bin php cng trnh chng xi, gim sng

8.2.1. Chc nng, nhim vi vi vng bi bin b xm thc v ti khng trng c cy chn sng, gii php bo v bi l xy dng cng trnh gim sng, chng xi, to bi. Cc dng cng trnh thng p dng l p m hn hoc p ph/gim sng.

Hnh 12. Cc gii php bo v bi bng cng trnh

8.2.2. Thit kt h thng p m hn, p gim sng8.2.2.1. H thng p m hn

a) Nguyn tc chung

- Tnh ton, xc nh ng bao ngoi cho h thng m hn v ni tip vi ng b v c hai pha to thnh ng trn thun.

- Chiu di m hn c xc nh theo khu sng v v c tnh ca bn ct ti khu vc cn xy dng m hn.

- Gc m hn cn ni tip n nh vo vng b v c gia c hai bn khng b sng v dng chy gy xi.

b) Cc b phn ca m hn, gm: Mi; Thn; Gc.

Hnh 13.Cu to m hn

c) B tr h thng m hn

- Tuyn: Cn xc nh ng b mi cho on b cn bo v (ng b thit k), ng b mi ny cn trn thun, ni tip tt vi ng b on khng c m hn. Chiu di m hn ph thuc vo dc bi, thng thng mi m hn cn ra ti di sng v mc nc triu trung bnh.

- Phng t trc dc: Trc dc h m hn trong h thng thng t vung gc vi tuyn ng b thit k. i vi vng bi gn ca sng chu nh hng mnh ca dng chy t sng v vng bi c dng ven vi tc ln ( > 1m/s) th trc m hn t xui theo dng chy ( 0.

B.1.2. Kt qu:

B.1.2.1 i vi vng bin t Qung Ninh n Qung Nam

3

Bng C-2.6 Kt qu tnh sng phc v bin (tip).

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Bng C-2.7 Kt qu tnh sng phc v bin

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Bng C-2.7 Kt qu tnh sng phc v bin (tip)

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3.2. Phu Luc Song B.1.2.2.pdf

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B.1.2.2. i vi cc tnh t Qung Ngi n B Ra - Vng Tu

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3.3. Phu Luc Song B.1.2.3.pdf

255

B.1.2.3. i vi cc tnh t B Ra Vng Tu n Kin Giang

Vng 6 - mt ct 80 - chu k lp 10 nm; X=716202 Y=1151738 Vng 6 - mt ct 80 - chu k lp 20 nm; X=716202 Y=1151738Khong

cch t b [m]

su [m] Hs [m] Tp [s] Tm01 [s] Tm02 [s]

Set up [m]

Khong cch t b

[m] su

[m] Hs [m] Tp [s] Tm01 [s] Tm02 [s] Set up [m]

0 1.89 0.79 10.89 10.25 10.05 0.35 0 2.04 0.84 10.89 10.53 10.32 0.37

50 2.04 0.79 10.89 10.25 10.05 0.35 50 2.19 0.84 10.89 10.52 10.32 0.37

100 2.33 0.77 10.89 10.24 10.04 0.35 100 2.47 0.82 10.89 10.52 10.31 0.37

150 2.34 0.77 10.89 10.24 10.04 0.35 150 2.48 0.82 10.89 10.52 10.31 0.37

200 2.35 0.77 10.89 10.24 10.04 0.35 200 2.49 0.82 10.89 10.52 10.31 0.37

250 2.35 0.77 10.89 10.24 10.04 0.35 250 2.50 0.82 10.89 10.52 10.31 0.37

300 2.36 0.77 10.89 10.24 10.04 0.35 300 2.51 0.82 10.89 10.52 10.31 0.37

350 2.37 0.77 10.89 10.24 10.04 0.35 350 2.51 0.82 10.89 10.52 10.31 0.37

400 2.37 0.77 10.89 10.24 10.04 0.35 400 2.52 0.82 10.89 10.52 10.31 0.37

450 2.38 0.77 10.89 10.24 10.04 0.35 450 2.52 0.82 10.89 10.52 10.31 0.37

500 2.38 0.77 10.89 10.24 10.04 0.35 500 2.53 0.82 10.89 10.52 10.31 0.37

600 2.39 0.77 10.89 10.24 10.04 0.35 600 2.54 0.82 10.89 10.52 10.31 0.37

700 2.40 0.77 10.89 10.24 10.04 0.35 700 2.55 0.82 10.89 10.52 10.31 0.37

800 2.41 0.77 10.89 10.24 10.04 0.35 800 2.55 0.82 10.89 10.52 10.31 0.37

900 2.41 0.77 10.89 10.24 10.04 0.35 900 2.55 0.82 10.89 10.52 10.31 0.37

1000 2.41 0.77 10.89 10.24 10.04 0.35 1000 2.56 0.83 10.89 10.52 10.31 0.37


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 2.53 1.00 11.76 10.90 10.68 0.39 0 2.95 1.15 11.76 11.17 10.96 0.40

50 2.68 1.00 11.76 10.89 10.68 0.39 50 3.10 1.15 11.76 11.17 10.96 0.40

100 2.96 0.99 11.76 10.89 10.67 0.39 100 3.38 1.14 11.76 11.16 10.95 0.40

150 2.97 0.99 11.76 10.89 10.67 0.39 150 3.39 1.14 11.76 11.16 10.95 0.40

200 2.98 0.99 11.76 10.88 10.67 0.39 200 3.40 1.14 11.76 11.16 10.95 0.40

250 2.99 0.99 11.76 10.88 10.67 0.39 250 3.41 1.14 11.76 11.16 10.95 0.40

300 3.00 0.99 11.76 10.88 10.67 0.39 300 3.42 1.14 11.76 11.16 10.95 0.40

350 3.01 0.99 11.76 10.88 10.67 0.39 350 3.42 1.14 11.76 11.16 10.95 0.40

400 3.01 0.99 11.76 10.88 10.67 0.39 400 3.43 1.14 11.76 11.16 10.95 0.40

450 3.02 0.99 11.76 10.88 10.67 0.39 450 3.43 1.14 11.76 11.16 10.95 0.40

500 3.02 0.99 11.76 10.88 10.67 0.39 500 3.44 1.14 11.76 11.16 10.95 0.40

600 3.03 0.99 11.76 10.88 10.67 0.39 600 3.45 1.14 11.76 11.16 10.95 0.40

700 3.04 0.99 11.76 10.88 10.67 0.39 700 3.46 1.14 11.76 11.16 10.95 0.40

800 3.05 0.99 11.76 10.88 10.67 0.39 800 3.46 1.14 11.76 11.16 10.95 0.40

900 3.05 0.99 11.76 10.88 10.67 0.39 900 3.46 1.14 11.76 11.16 10.95 0.40

1000 3.05 0.99 11.76 10.88 10.67 0.39 1000 3.47 1.14 11.76 11.16 10.95 0.40

256


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 3.03 1.18 11.76 11.26 11.05 0.41 0 3.25 1.26 11.76 11.35 11.14 0.4150 3.18 1.18 11.76 11.26 11.04 0.41 50 3.40 1.26 11.76 11.35 11.13 0.41100 3.46 1.17 11.76 11.25 11.04 0.41 100 3.68 1.25 11.76 11.34 11.13 0.41150 3.47 1.17 11.76 11.25 11.04 0.41 150 3.69 1.25 11.76 11.34 11.13 0.41200 3.48 1.17 11.76 11.25 11.04 0.41 200 3.70 1.25 11.76 11.34 11.13 0.41250 3.49 1.17 11.76 11.25 11.04 0.41 250 3.71 1.25 11.76 11.34 11.13 0.41300 3.50 1.17 11.76 11.25 11.04 0.41 300 3.72 1.25 11.76 11.34 11.13 0.41350 3.50 1.17 11.76 11.25 11.04 0.41 350 3.73 1.25 11.76 11.34 11.13 0.41400 3.51 1.17 11.76 11.25 11.04 0.41 400 3.73 1.25 11.76 11.34 11.13 0.41450 3.52 1.17 11.76 11.25 11.04 0.41 450 3.74 1.25 11.76 11.34 11.13 0.41500 3.52 1.17 11.76 11.25 11.04 0.41 500 3.74 1.25 11.76 11.34 11.13 0.41600 3.53 1.17 11.76 11.25 11.04 0.41 600 3.75 1.25 11.76 11.34 11.13 0.41700 3.54 1.17 11.76 11.25 11.04 0.41 700 3.76 1.25 11.76 11.34 11.13 0.41800 3.54 1.17 11.76 11.25 11.04 0.41 800 3.76 1.25 11.76 11.34 11.13 0.41900 3.55 1.17 11.76 11.25 11.04 0.41 900 3.77 1.25 11.76 11.34 11.13 0.41

1000 3.55 1.17 11.76 11.25 11.04 0.41 1000 3.77 1.25 11.76 11.34 11.13 0.41

Vng 6 - mt ct 80 - chu k lp 200 nm; X=716202 Y=1151738Khong

cch t b [m]


Set up [m]

0 3.44 1.33 11.76 11.45 11.23 0.4150 3.60 1.33 11.76 11.44 11.23 0.41100 3.88 1.32 11.76 11.44 11.22 0.41150 3.89 1.32 11.76 11.44 11.22 0.41200 3.90 1.32 11.76 11.44 11.22 0.41250 3.91 1.32 11.76 11.44 11.22 0.41300 3.91 1.32 11.76 11.44 11.22 0.41350 3.92 1.32 11.76 11.44 11.22 0.41400 3.93 1.32 11.76 11.44 11.22 0.41450 3.93 1.32 11.76 11.44 11.22 0.41500 3.94 1.32 11.76 11.44 11.22 0.41600 3.95 1.32 11.76 11.43 11.22 0.41700 3.95 1.32 11.76 11.43 11.22 0.41800 3.96 1.32 11.76 11.43 11.22 0.41900 3.96 1.32 11.76 11.43 11.22 0.41

1000 3.96 1.32 11.76 11.43 11.22 0.41

257


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 2.03 0.77 10.89 10.18 9.96 0.39 0 2.30 0.86 10.89 10.44 10.23 0.4250 2.04 0.77 10.89 10.18 9.96 0.39 50 2.30 0.87 10.89 10.44 10.23 0.42100 2.04 0.77 10.89 10.18 9.96 0.39 100 2.31 0.87 10.89 10.44 10.23 0.42150 2.05 0.78 10.89 10.18 9.96 0.39 150 2.31 0.87 10.89 10.44 10.23 0.42200 2.05 0.78 10.89 10.18 9.96 0.39 200 2.32 0.88 10.89 10.44 10.23 0.42250 2.06 0.78 10.89 10.18 9.96 0.39 250 2.32 0.88 10.89 10.44 10.23 0.42300 2.06 0.79 10.89 10.18 9.96 0.39 300 2.33 0.89 10.89 10.44 10.23 0.42350 2.07 0.79 10.89 10.18 9.96 0.39 350 2.34 0.89 10.89 10.44 10.23 0.42400 2.07 0.79 10.89 10.18 9.96 0.39 400 2.34 0.89 10.89 10.44 10.23 0.42450 2.08 0.80 10.89 10.18 9.96 0.39 450 2.35 0.90 10.89 10.44 10.23 0.41500 2.09 0.80 10.89 10.18 9.97 0.39 500 2.35 0.90 10.89 10.44 10.23 0.41600 2.11 0.81 10.89 10.18 9.97 0.39 600 2.38 0.91 10.89 10.44 10.23 0.41700 2.14 0.82 10.89 10.18 9.97 0.39 700 2.40 0.92 10.89 10.44 10.23 0.41800 2.17 0.83 10.89 10.18 9.97 0.39 800 2.44 0.93 10.89 10.44 10.23 0.41900 2.20 0.83 10.89 10.17 9.97 0.39 900 2.47 0.93 10.89 10.44 10.23 0.41

1000 2.23 0.84 10.89 10.17 9.97 0.39 1000 2.49 0.94 10.89 10.44 10.23 0.41


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 2.88 1.08 11.76 10.81 10.59 0.44 0 3.34 1.25 11.76 11.08 10.87 0.4550 2.88 1.08 11.76 10.81 10.59 0.44 50 3.34 1.25 11.76 11.08 10.87 0.45100 2.89 1.08 11.76 10.81 10.59 0.44 100 3.35 1.25 11.76 11.08 10.87 0.45150 2.89 1.09 11.76 10.81 10.59 0.44 150 3.35 1.26 11.76 11.08 10.87 0.45200 2.90 1.09 11.76 10.81 10.59 0.44 200 3.36 1.26 11.76 11.08 10.87 0.45250 2.90 1.09 11.76 10.81 10.59 0.44 250 3.36 1.27 11.76 11.08 10.87 0.45300 2.91 1.10 11.76 10.81 10.59 0.44 300 3.37 1.27 11.76 11.08 10.87 0.45350 2.91 1.10 11.76 10.81 10.59 0.44 350 3.38 1.27 11.76 11.08 10.87 0.45400 2.92 1.11 11.76 10.81 10.59 0.44 400 3.38 1.28 11.76 11.08 10.87 0.45450 2.92 1.11 11.76 10.81 10.59 0.44 450 3.39 1.28 11.76 11.08 10.87 0.45500 2.93 1.11 11.76 10.81 10.59 0.44 500 3.39 1.29 11.76 11.08 10.87 0.45600 2.95 1.12 11.76 10.81 10.59 0.44 600 3.42 1.29 11.76 11.08 10.87 0.45700 2.98 1.13 11.76 10.81 10.59 0.44 700 3.44 1.30 11.76 11.08 10.87 0.45800 3.01 1.14 11.76 10.81 10.59 0.44 800 3.48 1.31 11.76 11.08 10.86 0.45900 3.05 1.14 11.76 10.80 10.59 0.44 900 3.51 1.31 11.76 11.08 10.86 0.45

1000 3.07 1.15 11.76 10.80 10.59 0.44 1000 3.53 1.32 11.76 11.08 10.86 0.45

258


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 3.51 1.31 11.76 11.17 10.95 0.46 0 3.66 1.36 11.76 11.26 11.04 0.4650 3.52 1.31 11.76 11.17 10.95 0.46 50 3.66 1.37 11.76 11.26 11.04 0.46100 3.52 1.32 11.76 11.17 10.95 0.46 100 3.67 1.37 11.76 11.26 11.04 0.46150 3.53 1.32 11.76 11.17 10.95 0.46 150 3.67 1.37 11.76 11.26 11.04 0.46200 3.54 1.33 11.76 11.17 10.95 0.46 200 3.68 1.38 11.76 11.26 11.04 0.46250 3.54 1.33 11.76 11.17 10.95 0.46 250 3.69 1.38 11.76 11.26 11.04 0.46300 3.54 1.33 11.76 11.17 10.95 0.46 300 3.69 1.39 11.76 11.26 11.04 0.46350 3.55 1.34 11.76 11.17 10.95 0.46 350 3.70 1.39 11.76 11.26 11.04 0.46400 3.56 1.34 11.76 11.17 10.95 0.46 400 3.70 1.39 11.76 11.26 11.04 0.46450 3.56 1.35 11.76 11.17 10.95 0.46 450 3.71 1.40 11.76 11.26 11.04 0.46500 3.57 1.35 11.76 11.17 10.95 0.46 500 3.71 1.40 11.76 11.26 11.04 0.46600 3.59 1.36 11.76 11.17 10.95 0.46 600 3.74 1.41 11.76 11.26 11.04 0.46700 3.62 1.36 11.76 11.17 10.95 0.45 700 3.76 1.42 11.76 11.25 11.04 0.46800 3.65 1.37 11.76 11.17 10.95 0.45 800 3.80 1.42 11.76 11.25 11.04 0.46900 3.69 1.38 11.76 11.17 10.95 0.45 900 3.83 1.43 11.76 11.25 11.04 0.46

1000 3.71 1.38 11.76 11.17 10.95 0.45 1000 3.86 1.44 11.76 11.25 11.03 0.46


cch t b [m]


Set up [m]

0 3.90 1.45 11.76 11.35 11.13 0.4750 3.91 1.46 11.76 11.35 11.13 0.47100 3.91 1.46 11.76 11.35 11.13 0.47150 3.92 1.46 11.76 11.35 11.13 0.47200 3.93 1.47 11.76 11.35 11.13 0.46250 3.93 1.47 11.76 11.35 11.13 0.46300 3.93 1.47 11.76 11.35 11.13 0.46350 3.94 1.48 11.76 11.35 11.13 0.46400 3.95 1.48 11.76 11.35 11.13 0.46450 3.95 1.49 11.76 11.35 11.13 0.46500 3.96 1.49 11.76 11.35 11.13 0.46600 3.98 1.50 11.76 11.35 11.13 0.46700 4.01 1.51 11.76 11.35 11.13 0.46800 4.04 1.51 11.76 11.35 11.13 0.46900 4.08 1.52 11.76 11.34 11.13 0.46

1000 4.10 1.52 11.76 11.34 11.13 0.46

259


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 1.96 1.06 10.89 10.31 10.13 0.32 0 2.25 1.20 10.89 10.58 10.40 0.3350 2.26 1.16 10.89 10.30 10.13 0.31 50 2.56 1.28 10.89 10.57 10.39 0.33100 2.61 1.22 10.89 10.29 10.12 0.31 100 2.90 1.34 10.89 10.56 10.38 0.32150 2.88 1.25 10.89 10.29 10.11 0.31 150 3.18 1.36 10.89 10.56 10.38 0.32200 2.98 1.27 10.89 10.29 10.11 0.30 200 3.27 1.38 10.89 10.56 10.38 0.32250 3.08 1.28 10.89 10.29 10.11 0.30 250 3.37 1.39 10.89 10.56 10.37 0.32300 3.16 1.29 10.89 10.28 10.11 0.30 300 3.46 1.40 10.89 10.55 10.37 0.32350 3.25 1.30 10.89 10.28 10.11 0.30 350 3.54 1.40 10.89 10.55 10.37 0.32400 3.33 1.30 10.89 10.28 10.10 0.30 400 3.63 1.40 10.89 10.55 10.37 0.32450 3.42 1.30 10.89 10.28 10.10 0.30 450 3.71 1.40 10.89 10.55 10.37 0.32500 3.50 1.30 10.89 10.28 10.10 0.30 500 3.80 1.40 10.89 10.55 10.36 0.32600 3.67 1.30 10.89 10.27 10.10 0.30 600 3.97 1.40 10.89 10.54 10.36 0.32700 3.83 1.29 10.89 10.27 10.09 0.30 700 4.13 1.39 10.89 10.54 10.36 0.32800 3.97 1.28 10.89 10.27 10.09 0.30 800 4.27 1.38 10.89 10.54 10.35 0.32900 4.11 1.27 10.89 10.26 10.09 0.30 900 4.41 1.37 10.89 10.53 10.35 0.32

1000 4.14 1.27 10.89 10.26 10.09 0.30 1000 4.44 1.37 10.89 10.53 10.35 0.32


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 2.83 1.45 11.76 10.94 10.75 0.35 0 3.34 1.64 11.76 11.21 11.01 0.3650 3.14 1.52 11.76 10.94 10.75 0.34 50 3.65 1.70 11.76 11.20 11.00 0.36100 3.49 1.56 11.76 10.93 10.74 0.34 100 3.99 1.73 11.76 11.19 11.00 0.35150 3.76 1.58 11.76 10.92 10.74 0.34 150 4.27 1.74 11.76 11.19 10.99 0.35200 3.86 1.59 11.76 10.92 10.73 0.34 200 4.37 1.75 11.76 11.19 10.99 0.35250 3.96 1.59 11.76 10.92 10.73 0.34 250 4.46 1.76 11.76 11.18 10.99 0.35300 4.05 1.60 11.76 10.92 10.73 0.34 300 4.55 1.76 11.76 11.18 10.98 0.35350 4.13 1.60 11.76 10.92 10.73 0.34 350 4.64 1.77 11.76 11.18 10.98 0.35400 4.22 1.60 11.76 10.91 10.72 0.34 400 4.72 1.77 11.76 11.18 10.98 0.35450 4.30 1.60 11.76 10.91 10.72 0.34 450 4.81 1.77 11.76 11.18 10.98 0.35500 4.39 1.60 11.76 10.91 10.72 0.34 500 4.89 1.76 11.76 11.17 10.98 0.35600 4.56 1.59 11.76 10.91 10.72 0.34 600 5.06 1.76 11.76 11.17 10.97 0.35700 4.72 1.59 11.76 10.90 10.71 0.34 700 5.22 1.75 11.76 11.17 10.97 0.35800 4.86 1.58 11.76 10.90 10.71 0.34 800 5.36 1.75 11.76 11.17 10.97 0.35900 5.00 1.57 11.76 10.90 10.71 0.34 900 5.50 1.74 11.76 11.17 10.97 0.36

1000 5.03 1.57 11.76 10.90 10.71 0.34 1000 5.53 1.74 11.76 11.16 10.97 0.36

260


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 3.49 1.70 11.76 11.29 11.10 0.36 0 3.65 1.77 11.76 11.38 11.18 0.3750 3.80 1.76 11.76 11.29 11.09 0.36 50 3.96 1.82 11.76 11.37 11.17 0.36100 4.14 1.79 11.76 11.28 11.08 0.36 100 4.31 1.85 11.76 11.37 11.17 0.36150 4.42 1.80 11.76 11.27 11.08 0.36 150 4.58 1.86 11.76 11.36 11.16 0.36200 4.52 1.81 11.76 11.27 11.07 0.36 200 4.68 1.86 11.76 11.36 11.16 0.36250 4.62 1.81 11.76 11.27 11.07 0.36 250 4.78 1.87 11.76 11.36 11.16 0.36300 4.70 1.82 11.76 11.27 11.07 0.36 300 4.87 1.87 11.76 11.36 11.15 0.36350 4.79 1.82 11.76 11.27 11.07 0.36 350 4.95 1.87 11.76 11.35 11.15 0.36400 4.87 1.82 11.76 11.27 11.07 0.36 400 5.04 1.87 11.76 11.35 11.15 0.36450 4.96 1.82 11.76 11.26 11.06 0.36 450 5.12 1.87 11.76 11.35 11.15 0.36500 5.04 1.82 11.76 11.26 11.06 0.36 500 5.21 1.87 11.76 11.35 11.15 0.36600 5.21 1.81 11.76 11.26 11.06 0.36 600 5.38 1.87 11.76 11.35 11.14 0.36700 5.38 1.80 11.76 11.26 11.06 0.36 700 5.54 1.86 11.76 11.34 11.14 0.36800 5.52 1.80 11.76 11.25 11.05 0.36 800 5.68 1.85 11.76 11.34 11.14 0.36900 5.66 1.79 11.76 11.25 11.05 0.36 900 5.82 1.85 11.76 11.34 11.14 0.36

1000 5.69 1.79 11.76 11.25 11.05 0.36 1000 5.85 1.84 11.76 11.34 11.14 0.36


cch t b [m]


Set up [m]

0 3.86 1.85 11.76 11.47 11.27 0.3750 4.17 1.90 11.76 11.46 11.26 0.37100 4.51 1.92 11.76 11.46 11.26 0.36150 4.79 1.93 11.76 11.45 11.25 0.36200 4.89 1.94 11.76 11.45 11.25 0.36250 4.99 1.94 11.76 11.45 11.25 0.36300 5.07 1.94 11.76 11.45 11.24 0.36350 5.16 1.94 11.76 11.45 11.24 0.36400 5.24 1.94 11.76 11.44 11.24 0.36450 5.33 1.94 11.76 11.44 11.24 0.36500 5.41 1.94 11.76 11.44 11.24 0.36600 5.58 1.94 11.76 11.44 11.23 0.36700 5.75 1.93 11.76 11.44 11.23 0.37800 5.88 1.92 11.76 11.43 11.23 0.37900 6.02 1.91 11.76 11.43 11.22 0.37

1000 6.06 1.91 11.76 11.43 11.22 0.37

261


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 2.18 0.89 10.89 10.27 10.08 0.34 0 2.39 0.98 10.89 10.55 10.35 0.3550 2.21 0.91 10.89 10.27 10.08 0.33 50 2.43 0.99 10.89 10.54 10.35 0.35100 2.24 0.92 10.89 10.27 10.08 0.33 100 2.45 1.01 10.89 10.54 10.35 0.35150 2.27 0.94 10.89 10.27 10.08 0.33 150 2.48 1.02 10.89 10.54 10.35 0.35200 2.31 0.95 10.89 10.27 10.08 0.33 200 2.52 1.03 10.89 10.54 10.35 0.35250 2.35 0.96 10.89 10.27 10.08 0.33 250 2.56 1.05 10.89 10.54 10.35 0.35300 2.40 0.98 10.89 10.27 10.08 0.33 300 2.61 1.06 10.89 10.54 10.35 0.35350 2.44 0.99 10.89 10.27 10.08 0.33 350 2.65 1.07 10.89 10.54 10.35 0.35400 2.48 1.00 10.89 10.26 10.08 0.33 400 2.69 1.08 10.89 10.54 10.35 0.35450 2.52 1.01 10.89 10.26 10.08 0.33 450 2.73 1.09 10.89 10.54 10.34 0.34500 2.57 1.02 10.89 10.26 10.08 0.33 500 2.78 1.10 10.89 10.54 10.34 0.34600 2.65 1.04 10.89 10.26 10.07 0.33 600 2.86 1.12 10.89 10.53 10.34 0.34700 2.73 1.05 10.89 10.26 10.07 0.33 700 2.94 1.13 10.89 10.53 10.34 0.34800 2.81 1.06 10.89 10.26 10.07 0.32 800 3.02 1.14 10.89 10.53 10.34 0.34900 2.89 1.06 10.89 10.25 10.07 0.32 900 3.10 1.14 10.89 10.53 10.34 0.34

1000 2.96 1.07 10.89 10.25 10.07 0.32 1000 3.17 1.14 10.89 10.52 10.33 0.34


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 2.94 1.20 11.76 10.91 10.72 0.37 0 3.39 1.38 11.76 11.19 10.98 0.3850 2.97 1.21 11.76 10.91 10.71 0.37 50 3.43 1.39 11.76 11.18 10.98 0.38100 3.00 1.22 11.76 10.91 10.71 0.37 100 3.46 1.40 11.76 11.18 10.98 0.38150 3.03 1.24 11.76 10.91 10.71 0.37 150 3.48 1.41 11.76 11.18 10.98 0.38200 3.07 1.25 11.76 10.91 10.71 0.36 200 3.53 1.42 11.76 11.18 10.98 0.38250 3.11 1.26 11.76 10.91 10.71 0.36 250 3.57 1.44 11.76 11.18 10.98 0.38300 3.15 1.27 11.76 10.91 10.71 0.36 300 3.61 1.45 11.76 11.18 10.98 0.37350 3.20 1.28 11.76 10.91 10.71 0.36 350 3.65 1.46 11.76 11.18 10.98 0.37400 3.24 1.29 11.76 10.90 10.71 0.36 400 3.70 1.46 11.76 11.18 10.98 0.37450 3.28 1.30 11.76 10.90 10.71 0.36 450 3.74 1.47 11.76 11.17 10.97 0.37500 3.32 1.31 11.76 10.90 10.71 0.36 500 3.78 1.48 11.76 11.17 10.97 0.37600 3.41 1.32 11.76 10.90 10.70 0.36 600 3.86 1.49 11.76 11.17 10.97 0.37700 3.49 1.33 11.76 10.90 10.70 0.36 700 3.95 1.50 11.76 11.17 10.97 0.37800 3.57 1.34 11.76 10.90 10.70 0.36 800 4.03 1.51 11.76 11.17 10.97 0.37900 3.65 1.34 11.76 10.89 10.70 0.36 900 4.10 1.51 11.76 11.17 10.97 0.37

1000 3.72 1.35 11.76 10.89 10.70 0.36 1000 4.18 1.51 11.76 11.16 10.96 0.37

262


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 3.55 1.44 11.76 11.27 11.07 0.38 0 3.70 1.50 11.76 11.36 11.16 0.3850 3.58 1.45 11.76 11.27 11.07 0.38 50 3.74 1.51 11.76 11.36 11.16 0.38100 3.61 1.46 11.76 11.27 11.07 0.38 100 3.76 1.52 11.76 11.36 11.15 0.38150 3.64 1.47 11.76 11.27 11.07 0.38 150 3.79 1.53 11.76 11.36 11.15 0.38200 3.68 1.48 11.76 11.27 11.07 0.38 200 3.83 1.54 11.76 11.36 11.15 0.38250 3.72 1.50 11.76 11.27 11.07 0.38 250 3.88 1.55 11.76 11.36 11.15 0.38300 3.77 1.51 11.76 11.27 11.06 0.38 300 3.92 1.56 11.76 11.35 11.15 0.38350 3.81 1.51 11.76 11.27 11.06 0.38 350 3.96 1.57 11.76 11.35 11.15 0.38400 3.85 1.52 11.76 11.26 11.06 0.38 400 4.00 1.58 11.76 11.35 11.15 0.38450 3.89 1.53 11.76 11.26 11.06 0.38 450 4.05 1.59 11.76 11.35 11.15 0.38500 3.94 1.54 11.76 11.26 11.06 0.38 500 4.09 1.59 11.76 11.35 11.14 0.38600 4.02 1.55 11.76 11.26 11.06 0.37 600 4.17 1.61 11.76 11.35 11.14 0.38700 4.10 1.56 11.76 11.26 11.06 0.37 700 4.25 1.61 11.76 11.35 11.14 0.38800 4.18 1.56 11.76 11.26 11.05 0.37 800 4.34 1.62 11.76 11.34 11.14 0.38900 4.26 1.57 11.76 11.25 11.05 0.37 900 4.41 1.63 11.76 11.34 11.14 0.38

1000 4.33 1.57 11.76 11.25 11.05 0.37 1000 4.49 1.63 11.76 11.34 11.14 0.38


cch t b [m]


Set up [m]

0 3.86 1.56 11.76 11.45 11.25 0.3950 3.89 1.57 11.76 11.45 11.25 0.39100 3.92 1.58 11.76 11.45 11.24 0.39150 3.95 1.59 11.76 11.45 11.24 0.39200 3.99 1.60 11.76 11.45 11.24 0.39250 4.03 1.61 11.76 11.45 11.24 0.39300 4.07 1.62 11.76 11.45 11.24 0.39350 4.12 1.63 11.76 11.45 11.24 0.38400 4.16 1.64 11.76 11.44 11.24 0.38450 4.20 1.65 11.76 11.44 11.24 0.38500 4.25 1.65 11.76 11.44 11.24 0.38600 4.33 1.66 11.76 11.44 11.23 0.38700 4.41 1.67 11.76 11.44 11.23 0.38800 4.49 1.68 11.76 11.44 11.23 0.38900 4.57 1.68 11.76 11.43 11.23 0.38

1000 4.64 1.68 11.76 11.43 11.23 0.38

263


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 1.94 0.75 10.89 10.32 10.13 0.32 0 2.08 0.80 10.89 10.59 10.39 0.3450 1.97 0.75 10.89 10.32 10.13 0.32 50 2.10 0.81 10.89 10.59 10.39 0.34100 1.98 0.76 10.89 10.32 10.13 0.32 100 2.11 0.81 10.89 10.59 10.40 0.34150 1.98 0.76 10.89 10.32 10.13 0.32 150 2.12 0.82 10.89 10.59 10.40 0.34200 1.99 0.77 10.89 10.32 10.13 0.32 200 2.12 0.82 10.89 10.59 10.40 0.33250 2.00 0.78 10.89 10.32 10.13 0.32 250 2.14 0.83 10.89 10.59 10.40 0.33300 2.01 0.79 10.89 10.32 10.13 0.32 300 2.15 0.84 10.89 10.59 10.40 0.33350 2.02 0.79 10.89 10.32 10.13 0.32 350 2.16 0.85 10.89 10.59 10.40 0.33400 2.03 0.80 10.89 10.32 10.13 0.32 400 2.17 0.86 10.89 10.59 10.40 0.33450 2.05 0.81 10.89 10.32 10.13 0.32 450 2.18 0.86 10.89 10.59 10.40 0.33500 2.07 0.82 10.89 10.32 10.13 0.32 500 2.20 0.87 10.89 10.59 10.40 0.33600 2.10 0.84 10.89 10.32 10.13 0.32 600 2.23 0.89 10.89 10.59 10.40 0.33700 2.14 0.86 10.89 10.32 10.13 0.32 700 2.27 0.92 10.89 10.59 10.40 0.33800 2.18 0.89 10.89 10.31 10.13 0.31 800 2.31 0.94 10.89 10.59 10.40 0.33900 2.23 0.91 10.89 10.31 10.13 0.31 900 2.36 0.97 10.89 10.59 10.40 0.32

1000 2.28 0.94 10.89 10.31 10.13 0.31 1000 2.42 0.99 10.89 10.59 10.40 0.32


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 2.58 1.00 11.76 10.96 10.77 0.35 0 2.99 1.17 11.76 11.23 11.04 0.3550 2.60 1.00 11.76 10.96 10.77 0.34 50 3.02 1.17 11.76 11.23 11.04 0.35100 2.61 1.01 11.76 10.96 10.77 0.34 100 3.02 1.18 11.76 11.23 11.04 0.35150 2.62 1.02 11.76 10.96 10.77 0.34 150 3.03 1.19 11.76 11.23 11.04 0.35200 2.63 1.03 11.76 10.96 10.77 0.34 200 3.04 1.19 11.76 11.23 11.04 0.35250 2.64 1.03 11.76 10.96 10.77 0.34 250 3.05 1.20 11.76 11.23 11.04 0.35300 2.65 1.04 11.76 10.96 10.77 0.34 300 3.06 1.21 11.76 11.23 11.04 0.35350 2.66 1.05 11.76 10.96 10.77 0.34 350 3.07 1.22 11.76 11.23 11.04 0.35400 2.67 1.06 11.76 10.96 10.77 0.34 400 3.08 1.23 11.76 11.23 11.04 0.35450 2.68 1.07 11.76 10.96 10.77 0.34 450 3.10 1.24 11.76 11.23 11.04 0.35500 2.70 1.08 11.76 10.96 10.77 0.34 500 3.11 1.25 11.76 11.23 11.04 0.34600 2.73 1.10 11.76 10.96 10.77 0.34 600 3.15 1.27 11.76 11.23 11.04 0.34700 2.77 1.12 11.76 10.96 10.77 0.34 700 3.18 1.30 11.76 11.23 11.04 0.34800 2.81 1.15 11.76 10.96 10.77 0.33 800 3.23 1.32 11.76 11.23 11.03 0.34900 2.86 1.18 11.76 10.96 10.77 0.33 900 3.28 1.35 11.76 11.23 11.03 0.34

1000 2.92 1.20 11.76 10.95 10.77 0.33 1000 3.33 1.38 11.76 11.22 11.03 0.34

264


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 3.10 1.21 11.76 11.32 11.13 0.35 0 3.25 1.27 11.76 11.41 11.21 0.3550 3.12 1.21 11.76 11.32 11.12 0.35 50 3.27 1.28 11.76 11.41 11.21 0.35100 3.13 1.22 11.76 11.32 11.12 0.35 100 3.28 1.28 11.76 11.41 11.21 0.35150 3.14 1.23 11.76 11.32 11.12 0.35 150 3.29 1.29 11.76 11.41 11.21 0.35200 3.15 1.24 11.76 11.32 11.12 0.35 200 3.30 1.30 11.76 11.41 11.21 0.35250 3.16 1.25 11.76 11.32 11.12 0.35 250 3.31 1.31 11.76 11.41 11.21 0.35300 3.17 1.25 11.76 11.32 11.12 0.35 300 3.32 1.32 11.76 11.41 11.21 0.35350 3.18 1.26 11.76 11.32 11.12 0.35 350 3.33 1.33 11.76 11.41 11.21 0.35400 3.19 1.27 11.76 11.32 11.12 0.35 400 3.34 1.34 11.76 11.41 11.21 0.35450 3.20 1.28 11.76 11.32 11.12 0.35 450 3.35 1.35 11.76 11.41 11.21 0.35500 3.22 1.29 11.76 11.32 11.12 0.35 500 3.37 1.36 11.76 11.41 11.21 0.35600 3.25 1.32 11.76 11.32 11.12 0.35 600 3.40 1.38 11.76 11.41 11.21 0.35700 3.29 1.34 11.76 11.32 11.12 0.34 700 3.44 1.40 11.76 11.40 11.21 0.34800 3.33 1.37 11.76 11.32 11.12 0.34 800 3.48 1.43 11.76 11.40 11.21 0.34900 3.38 1.39 11.76 11.31 11.12 0.34 900 3.53 1.46 11.76 11.40 11.20 0.34

1000 3.44 1.42 11.76 11.31 11.12 0.34 1000 3.59 1.49 11.76 11.40 11.20 0.34


cch t b [m]


Set up [m]

0 3.44 1.34 11.76 11.50 11.30 0.3550 3.46 1.35 11.76 11.50 11.30 0.35100 3.47 1.36 11.76 11.50 11.30 0.35150 3.48 1.37 11.76 11.50 11.30 0.35200 3.49 1.38 11.76 11.50 11.30 0.35250 3.50 1.38 11.76 11.50 11.30 0.35300 3.51 1.39 11.76 11.50 11.30 0.35350 3.52 1.40 11.76 11.50 11.30 0.35400 3.53 1.41 11.76 11.50 11.30 0.35450 3.54 1.42 11.76 11.50 11.30 0.35500 3.56 1.43 11.76 11.50 11.30 0.35600 3.59 1.46 11.76 11.50 11.30 0.35700 3.63 1.48 11.76 11.50 11.30 0.35800 3.67 1.51 11.76 11.50 11.30 0.34900 3.72 1.54 11.76 11.49 11.30 0.34

1000 3.78 1.57 11.76 11.49 11.29 0.34

265


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 1.98 0.82 10.89 10.24 10.05 0.34 0 2.12 0.87 10.89 10.52 10.31 0.3650 2.06 0.83 10.89 10.24 10.05 0.34 50 2.20 0.88 10.89 10.52 10.31 0.36100 2.12 0.83 10.89 10.24 10.05 0.34 100 2.25 0.88 10.89 10.52 10.31 0.36150 2.19 0.83 10.89 10.24 10.04 0.34 150 2.33 0.88 10.89 10.52 10.31 0.36200 2.26 0.83 10.89 10.24 10.04 0.34 200 2.40 0.88 10.89 10.51 10.31 0.36250 2.33 0.83 10.89 10.24 10.04 0.34 250 2.46 0.88 10.89 10.51 10.31 0.36300 2.36 0.83 10.89 10.24 10.04 0.34 300 2.50 0.88 10.89 10.51 10.31 0.36350 2.40 0.83 10.89 10.24 10.04 0.34 350 2.53 0.88 10.89 10.51 10.31 0.36400 2.43 0.83 10.89 10.24 10.04 0.34 400 2.57 0.87 10.89 10.51 10.31 0.36450 2.47 0.82 10.89 10.24 10.04 0.34 450 2.60 0.87 10.89 10.51 10.31 0.36500 2.51 0.82 10.89 10.24 10.04 0.34 500 2.64 0.87 10.89 10.51 10.31 0.36600 2.59 0.82 10.89 10.23 10.04 0.34 600 2.72 0.87 10.89 10.51 10.31 0.36700 2.67 0.81 10.89 10.23 10.04 0.34 700 2.81 0.86 10.89 10.51 10.30 0.36800 2.75 0.81 10.89 10.23 10.03 0.34 800 2.89 0.86 10.89 10.51 10.30 0.36900 2.83 0.80 10.89 10.23 10.03 0.34 900 2.97 0.85 10.89 10.50 10.30 0.36

1000 2.92 0.80 10.89 10.23 10.03 0.34 1000 3.05 0.85 10.89 10.50 10.30 0.36


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 2.63 1.06 11.76 10.89 10.69 0.37 0 3.04 1.21 11.76 11.17 10.96 0.3850 2.71 1.06 11.76 10.89 10.69 0.37 50 3.12 1.21 11.76 11.17 10.96 0.38100 2.77 1.07 11.76 10.89 10.69 0.37 100 3.17 1.21 11.76 11.17 10.96 0.38150 2.84 1.07 11.76 10.89 10.69 0.37 150 3.24 1.21 11.76 11.16 10.96 0.38200 2.91 1.06 11.76 10.89 10.68 0.37 200 3.32 1.21 11.76 11.16 10.96 0.38250 2.98 1.06 11.76 10.89 10.68 0.37 250 3.38 1.21 11.76 11.16 10.96 0.38300 3.01 1.06 11.76 10.89 10.68 0.37 300 3.42 1.21 11.76 11.16 10.95 0.38350 3.05 1.06 11.76 10.89 10.68 0.37 350 3.45 1.21 11.76 11.16 10.95 0.38400 3.08 1.06 11.76 10.89 10.68 0.37 400 3.49 1.21 11.76 11.16 10.95 0.38450 3.12 1.06 11.76 10.88 10.68 0.37 450 3.52 1.20 11.76 11.16 10.95 0.38500 3.16 1.06 11.76 10.88 10.68 0.37 500 3.56 1.20 11.76 11.16 10.95 0.38600 3.24 1.05 11.76 10.88 10.68 0.37 600 3.64 1.20 11.76 11.16 10.95 0.38700 3.32 1.05 11.76 10.88 10.68 0.37 700 3.73 1.19 11.76 11.16 10.95 0.38800 3.40 1.04 11.76 10.88 10.67 0.37 800 3.81 1.19 11.76 11.15 10.95 0.38900 3.48 1.04 11.76 10.88 10.67 0.37 900 3.89 1.18 11.76 11.15 10.95 0.39

1000 3.56 1.03 11.76 10.88 10.67 0.37 1000 3.97 1.18 11.76 11.15 10.94 0.39

266


cch t b [m]


Set up [m]

Khong cch t b

[m] su


0 3.14 1.25 11.76 11.26 11.05 0.39 0 3.31 1.31 11.76 11.35 11.14 0.3950 3.22 1.25 11.76 11.26 11.05 0.39 50 3.39 1.31 11.76 11.34 11.14 0.39100 3.28 1.25 11.76 11.25 11.05 0.39 100 3.44 1.31 11.76 11.34 11.13 0.39150 3.35 1.25 11.76 11.25 11.05 0.39 150 3.52 1.31 11.76 11.34 11.13 0.39200 3.42 1.25 11.76 11.25 11.04 0.39 200 3.59 1.31 11.76 11.34 11.13 0.39250 3.49 1.25 11.76 11.25 11.04 0.39 250 3.65 1.31 11.76 11.34 11.13 0.39300 3.52 1.25 11.76 11.25 11.04 0.39 300 3.69 1.31 11.76 11.34 11.13 0.39350 3.56 1.25 11.76 11.25 11.04 0.39 350 3.72 1.31 11.76 11.34 11.13 0.39400 3.59 1.24 11.76 11.25 11.04 0.39 400 3.76 1.30 11.76 11.34 11.13 0.39450 3.63 1.24 11.76 11.25 11.04 0.39 450 3.79 1.30 11.76 11.34 11.13 0.39500 3.67 1.24 11.76 11.25 11.04 0.39 500 3.83 1.30 11.76 11.34 11.13 0.39600 3.75 1.24 11.76 11.25 11.04 0.39 600 3.92 1.30 11.76 11.34 11.13 0.39700 3.83 1.23 11.76 11.24 11.04 0.39 700 4.00 1.29 11.76 11.33 11.12 0.39800 3.91 1.23 11.76 11.24 11.03 0.39 800 4.08 1.29 11.76 11.33 11.12 0.39900 3.99 1.22 11.76 11.24 11.03 0.39 900 4.16 1.28 11.76 11.33 11.12 0.39

1000 4.08 1.22 11.76 11.24 11.03 0.39 1000 4.24 1.28 11.76 11.33 11.12 0.39


cch t b [m]


Set up [m]

0 3.49 1.37 11.76 11.44 11.23 0.3950 3.57 1.38 11.76 11.44 11.23 0.39100 3.63 1.38 11.76 11.44 11.23 0.39150 3.70 1.38 11.76 11.44 11.23 0.39200 3.78 1.37 11.76 11.43 11.22 0.39250 3.84 1.37 11.76 11.43 11.22 0.39300 3.87 1.37 11.76 11.43 11.22 0.39350 3.91 1.37 11.76 11.43 11.22 0.39400 3.94 1.37 11.76 11.43 11.22 0.39450 3.98 1.37 11.76 11.43 11.22 0.39500 4.02 1.37 11.76 11.43 11.22 0.39600 4.10 1.36 11.76 11.43 11.22 0.39700 4.18 1.36 11.76 11.43 11.22 0.39800 4.26 1.35 11.76 11.43 11.21 0.39900 4.34 1.35 11.76 11.42 11.21 0.39

1000 4.43 1.35 11.76 11.42 11.21 0.39

267


cch t b [m]

su [m

Documents

Khongso_904187 Tiêu Chuẩn Kỹ Thuật Áp Dụng Cho Chương Trình Củng Cố, Bảo Vệ Và Nâng Cấp Đê Biển