wh mo hinh toan trong thuy van

8/14/2019 wh mo hinh toan trong thuy van

1/25

Trng H Khoa Hc T Nhin TPHCMTrng H Khoa Hc T Nhin TPHCM

BB MMnn: Hi Dng Hc: Hi Dng Hc

Lp: 05HD1ALp: 05HD1A

TI: TI:


2/25

Ni Dung

1. S cn thit ca m hnh ton trong d bo lS cn thit ca m hnh ton trong d bo l

a. nh hng ca l i vi i sng con ngia. nh hng ca l i vi i sng con ngi

b. Ti sao phi dng m hnh ton ?b. Ti sao phi dng m hnh ton ?

2. Cc m hnh ton trong d bo l2. Cc m hnh ton trong d bo l

a.a.Phn loi cc m hnh ton trong d bo thy vnPhn loi cc m hnh ton trong d bo thy vn

b. Mt s m hnh c thb. Mt s m hnh c th


3/25

nh hng ca l i vii sng con ngi

L l hin tng nc sng dng cao trong mt khong thi gian nhtnh, sau gim dn. Trong ma ma l, nhng trn ma tng t lintip trn lu vc sng, lm cho nc sng tng t ni tip nhau dng cao,

to ra nhng trn l trong sng, sui. Vo cc thng ma ma c cc trnma ln, cng mnh, nc ma tch lu nhanh, nu t ti ch nonc th nc ma c vo dng chy, d gy ra l.

C th ni l lt l hin tng thu vn c bit nguy him, nht l lqut. Trong mt s trng hp n c sc tn ph khng khip v tr thnhthm ho t nhin gy ra nhng thit hi to ln cho ngi v ca ci.


4/25

NG B ST LCY CI B NG ,CUN TRI


5/25


6/25

CNH NG HO VANG- NNG (14.11.07)


7/25

Clip_mt cn l qut tiClip_mt cn l qut tiQu PhongQu Phong( Ngh An)( Ngh An)


8/25

Ti sao phi l m hnh ton ?

Yu cu v d bo l tr thnh vn cp thit trong d bo thyvn, k thut d bo ngy cng pht trin nng cao c th kp thicnh bo cho ngi dn sng trong vng thng xuyn chu nh hngca l. Nhm c th gim i nhng thit hi do l gy ra, vic xy dng

cc m hnh ton l mt phng php hiu qu trong d bo l v cnhbo nguy c ngp lt.

Cc m hnh tnh ton c th c chnh sa ph hp vi cc thams vt l, c im a hnh dng chy, iu kin tnh ton thc t...iu c tc ng ln n chnh xc v tnh kp thi trong d bothu vn ni chung cng nh d bo l ni ring.

Bn cnh , cc m hnh ton khng ngng hon thin k thut, lunc b sung, mm do hn vi s h tr ca cc phn mm thng tin,cng ngh vin thm vvv ng dng vo d bo trn din rng m

cc phng php truyn thng khng p ng c.


9/25

Phn LoiCc M Hnh TonTrong D Bo Thu Vn

M Hnh Ngu Nhin M Hnh Tt nhM Hnh Tt nh

Ngu Nhin


10/25

M hnh ngu nhin

Dng chy l c xem nh mt qu trnh ngu nhin.

S liu xy dng m hnh l bn thn chui dng chy qu kh, di bc l c ht c tnh, bn cht ca n.

S dng trong d bo dng chy theo thng, ma, nm v nhiu nm cc lu vc va v ln. t s dng trong d bo ngn hn.

Khng m t yu t hnh thnh dng chy.

Kt qu u ra mang tnh ngu nhin.

Khai thc h thng tin tt nh t chui s liu thc o, t quan tm nbn cht vt l ca hin tng.


11/25

M hnh tt nh:

Trong qu trnh hnh thnh dng chy cc thnh phn ttnh ng vai tr ch yu. Cc thnh phn tt nh c thxc nh hoc nhn thc c thng qua nh gi, phntch bn cht vt l ca hin tng.

M phng qu trnh hnh thnh dng chy l trn lu vc.

M hnh tt nh c nhiu dng khc nhau nh: m hnhhp en, m hnh nhn thc (hp xm), m hnh thy lc(hp trng).


12/25

M hnh tt nh-ngu nhin:

L s kt hp ca hai m hnh tt nh v ngunhin, nhm khc phc mt s hn ch ca hai m

hnh ny. Cu trc ca m hnh tt nh-ngu nhin c xt

n:

- Tnh chu k, tnh nhiu ca qu trnh thyvn trong m hnh ngu nhin.- ng thi cng xt n bn cht vt l ca

cc qu trnh thy vn trong m hnh tt nh.


13/25

Mt SM Hnh C Th

MARINE SSARR TANK MIKE 11 DIMOSOP


14/25

M hnh MARINE

M hnh tnh ton thy vn Marine do Vin C hc cht lngToulouse-IMFT(Cng ha Php ) xy dng.

Da trn phng trnh Saint-Vernant tnh ton d bo qu trnhhnh thnh, lan truyn l trn lu vc.

D bo tt cc cn l sinh ra do ma trn lu vc nh, nhng ihi phi c s liu a hnh, th nhng, lp ph, mng li trm

kh tng thy vn dy, c bit phi d bo c ma vi phn gii cao.


15/25

M hnh SSARR

Tng hp dng chy v iu tit h cha. c im ca m hnh: Xy dng mt s hnh th cho

h thng sng, bao gm:

- Cc lu vc b phn sinh dng chy .- iu kin thy vn tng i ng nht

- Cc on sng din ton l

- Cc h cha- Cc on sng x l nc vt

- Cc im ni v tng hp dng chy


16/25

Kt qu tnh ton ph thuc vo vic xc nh cc thng

s v cc quan h vt l, ch s, ch tiu c xc nhkh mm do.

Nhc im: s dng nhiu quan h di dng bng lm

cho vic iu chnh m hnh gp nhiu kh khn v khti u ha.

M hnh SSARR c ci bin ng dng cho h thngsng Hng, sng Tr Khc, sng V v cho kt qu khtt trong tnh ton v d bo nghip v.


17/25

M hnh TANK

Lu vc c m phng bng chui cc b cha xp theo tng vct ph hp vi hnh dng lu vc, cu trc th nhng, a cht,Ma trn lu vc c xem nh lng vo ca b cha trn cng.Mi b cha u c mt ca ra y.

M hnh n gin nht l kiu ct b TANK n: 4 b trn mt ct.Ph hp cho cc lu vc nh c m cao.

M hnh phc tp hn l m hnh TANK kp gm mt s ct b mphng qu trnh hnh thnh dng chy trn lu vc, v cc b m tqu trnh truyn sng l trong sng.


18/25

u im: ng dng tt cho lu vc va v nh. Khnng m phng dng chy thng, dng chy ngy, dngchy l.

Nhc im: c nhiu thng s nhng khng r nghavt l nn kh xc nh trc tip. Vic thit lp cu trcv thng s ha m hnh ch c th thc hin c saunhiu ln th sai, i hi ngi s dng phi c nhiukinh nghim v am hiu m hnh.

M hnh TANK ng dng d bo ngn hn qu trnh lcho thng lu sng Thi Bnh v mt s nhnh nh hthng sng Hng.


19/25

M hnh MIKE 11

Xy dng ti Vin Thy lc an Mch (DHI).

M hnh thu ng lc hc dng chy 1 chiu trong knhh, bi ven sng, vng ngp l.

M hnh MIKE 11 c p dng d bo l v vnhnh cc cng trnh phng chng l cho h thng sngHng - Thi Bnh.


20/25

u im ni tri so vi cc m hnh khc nh:

- Lin kt vi GIS.

- Kt ni vi cc m hnh thnh phn khc cab MIKE

V D: m hnh ma ro-dng chyNAM, m hnh thu ng lc hc 2 chiu MIKE21, m hnh dng chy nc di t, dng chytrn b mt v dng bc thot hi thm ph (MIKESHE)


21/25

M hnh DIMOSOP(DistributedHydrological Model For The Special Observing Period)

S dng d liu dng im ca cc trm o ma trong lu vc hoc sdng kt qu d bo di dng li (grid) l u ra ca cc m hnh dbo thi tit nh MM5 v BOLAM d bo l.

Hin ti ang s dng d bo l trung hn cho h thng sng Hng vsng Thi Bnh. y l m hnh c nh gi rt kh quan cn cnghin cu p dng cho cc lu vc khc.

Cu trc chnh ca m hnh :Chia lu vc tnh ton ra thnh mt h thng cc li. Kch thc

ca mi li ph thuc vo mc chi tit ca s liu thu thp cng nhyu cu tnh ton. Mi mt li trn lu vc u c c trng bi mtyu t thy vn no , c th l mt phn t ca lu vc, c th l mtphn t ca sng, hay l mt phn t ca h cha ...


22/25

u vo ca m hnh :

Ngoi lng ma cn l bn a hnh di dng DEM, bn hin trng s dng t, loi t di dng li Grid (v y lm hnh thy vn phn b), v cc loi cng trnh cng nh quytrnh vn hnh ca cc cng trnh.

u ra ca m hnh :

Lu lng hay mc nc l ti bt k mt li no (imno) trn lu vc ch khng phi hn ch ch ti mt v tr nh ccm hnh thy vn thng s gp a ra.


23/25

u im:

Kh nng s dng thng tin ton cu nh bn t, hin trng sdng t, nh v tinh m phng lu vc c bit hu ch cho cclu vc lin quc gia, khi m thng tin v lu vc phn quc giakia khng thu thp c hoc thu thp c nhng khng chnh xc

v u vo ca m hnh nh nu trn ton dng li.

C kh nng kt ni vi cc m hnh kh tng BOLAM v MM5 ko di thi gian d bo phc v vn hnh ti u h thng hcha.

Mt ln chy m hnh s cho kt qu d bo ca nhiu trm, nhiuv tr khc nhau vi thi gian d bo ln n 5 ngy.


24/25

NHM THC HIN:

0521001 Ma Th Trng An 0521003 Nguyn Thu Trang Anh 0521005 V Thi Xun Chi 052032 La Thanh Nht Linh

0521037 Nguyn Thi Kim Ngn 0521050 Ng Nam Thnh 0521051 Hong Th Thanh Thu


25/25

TI LIU THAM KHO: http://tvmt.wru.edu.vn/index.php?option=com_content&task=view

&id=365&Itemid=70 http://www.clst.ac.vn/AP/tapchitrongnuoc/hdkh/2001/so06/10.html http://www.imh.ac.vn/b_tintuc_sukien/ba_hoatdong/mlnews.2005-

07-08.8089688717 http://www.imh.ac.vn/c_tt_chuyen_nganh/ce_detai_duan/researcht

opic.2004-09-13.1208124850/researchtopic_view http://www.sihymete.org.vn/ctbaocao.php?idbc=32

http://www.imh.ac.vn/c_tt_chuyen_nganh/cc_thongbao_thuyvan/mlnews.2005-08-13.0494687631 http://tvmt.wru.edu.vn/index.php?option=com_content&task=view

&id=388 http://web.thanhnien.com.vn/News/PrintView.aspx?ID=214315 http://www.gisdevelopment.net/aars/acrs/1999/ts14/ts14106b.shtml Ti liu bi dng nghip v d bo vin kh tng thy vn
http://tvmt.wru.edu.vn/index.php?option=com_content&task=view&id=365&Itemid=70

Documents

wh mo hinh toan trong thuy van