8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
1/32
Sub-schedule A1 Design:
G2 Cut and Embankment Stability StrategyPreliminary Cut and Embankment Stability Strategy Reprt
D!S"R!#$"!%&
RE'!S!%& (!S"%R)
Revision Date Status Prepared Reviewed Approved
!SS$E
Prepared by:Reviewed by:Approved by: Project Director
Name Signature Date
File LocationComments:
oowoomba Second Range Crossing ProjectA! Design: Cut and "mban#ment Stability Strategy$%&$$'(!! !
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
2/32
E*aluatin Criteria and +ey Cnsideratins
o be deleted )rom individual documents and only included in overarc*ing e+ecutive summary
Responses will be evaluated against t*e "valuation Criteria set out in t*e tables below, *e -eyConsiderations wit*in eac* "valuation Criterion do not )orm part o) t*e evaluation but *ave been provided ton)orm Proponents o) some .but not necessarily all/ #ey matters t*e State will consider in relation to eac*Criterion,
*e Lead Aut*or is re0uired to cross re)erence t*e relevant -ey Considerations t*at *ave been addressed in*is document by completing t*e table below, 1ou only need to cross re)erence t*e applicable Considerationsand all ot*ers can be le)t blan#, A consolidated tabled will be included in t*e 2verview )or t*e ReturnableSc*edule,
1a Pr,ect Scpe .unctinality3 t*e appropriateness o) t*e proposed design solution in terms o)ac*ieving or e+ceeding t*e Project Scope and Project Functional Re0uirements,
-ey Considerations Re)erence
*e State will evaluate t*e appropriateness o) t*e proposed commercial solutionincluding t*e owners*ip structure o) t*e entity t*at will enter into t*e Project Deedwit* t*e State,
-ey considerations in t*e evaluation o) t*is criterion will include:
ravel times
ra))ic capacity
ra))ic movements
Freig*t e))iciency4 )unctionality and )acilities
Road sa)ety )acilities and systems
Availability considerations .including )lood immunity4 slope stability4 pavementdurability and minimising maintenance/
5itigation o) environmental4 cultural resource and community impacts
Compatibility wit* )uture upgrades4 adjacent land use and6or proposeddevelopments,
1b 1b Design re/uirements3 t*e suitability o) t*e design solution to support t*e )unctional outcomesand ac*ieve or e+ceed t*e Project 5inimum Re0uirements )or all design elements,
-ey Considerations Re)erence
*e State will evaluate t*e appropriateness o) t*e proposed commercial solutionincluding t*e owners*ip structure o) t*e entity t*at will enter into t*e Project Deedwit* t*e State,
-ey considerations in t*e evaluation o) t*is criterion will include:
Site investigation4 analysis and selection o) design input parameters
Application o) relevant design standards
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! $
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
3/32
Design approac*4 met*odology4 analysis and6or modelling
Design outcomes and standard o) design reports and drawings
Constructability and 295 compatibility considerations
Construction material selection4 e0uipment standards and project speci)icconstruction speci)ications,
1c !nn*atin and 0hle-.-li.e cnsideratins3 t*e e+tent to w*ic* appropriate innovation andw*oleo)li)e optimisation *as been used to reduce overall cost4 improve )unctional outcomes4en*ance )reig*t e))iciency and6or provide road user bene)its .including t*e e+tent to w*ic* any designdepartures are clearly identi)ied4 e+plained and justi)ied/,
-ey Considerations Re)erence
*e State will evaluate t*e appropriateness o) t*e proposed commercial solutionincluding t*e owners*ip structure o) t*e entity t*at will enter into t*e Project Deedwit* t*e State,
"n*anced design )unctionality
Additional design capacity or design li)e
7mproved road sa)ety )eatures .including design4 construction and 295/
5inimising maintenance re0uirements and provision o) maintenance access4particularly )or long li)e asset .;$% years/ components
angible and practical w*oleo)li)e cost improvement initiatives
"+amples w*ere t*e proposed tec*nical innovation or w*oleo)li)e optimisationapproac* *as been used success)ully in similar applications
*e e+tent to w*ic* any proposed departures )rom t*e Project 5inimumRe0uirements are clearly identi)ied4 e+plained and justi)ied
*e cumulative e))ect o) any proposed departures,
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!!
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
4/32
Glssary
"erm De.initin
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! =
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
5/32
Acrnym De.initins
"erm De.initin
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! %
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
6/32
"able . Cntents
1 Eecuti*e Summary3
2 !ntrductin3
$,! Project 2verview,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,'
$,$ Purpose and Scope o) Report,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,'
4 Relatinship t Pr,ect %b,ecti*es3
5 Related Pr,ects11
=,! >arrego ?ig*way Duplication,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!!
=,$ 2@5aras Road Duplication,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!!
=,< oundary Street Bpgrade,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!!
6 Design Standards and Criteria 12
%,! Per)ormance Criteria,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!$
%,$ Design Standards,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!$
%,< 5R 8eotec*nical 5inimum Design Standards,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!$
%,= Design Assumptions,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!$
%,% Design "+clusions,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!$
7 8ethdlgy14
9 Gelgical and Getechnical 8dels15
&,! Design Parameters,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!=&,$ 8roundwater,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!=
&,< Critical Sections,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!=
Embankments16
,! Slope Stability Analysis,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!%
,$ Settlement Analysis,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!%
,< Foundation Preparation,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!%
,= "mban#ment Design Details,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!%
3 Cuttings 17
',! 8lobal Stability Analysis,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!
',$ -inematic Analysis,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!
',< Roc#)all Analysis,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!
',= Slope Sur)ace reatment,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!
',% Cutting Design Details,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!
1; 8nitring and !nstrumentatin19
!(,! "mban#ments,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!&
!(,$ Cuttings,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!&11 Risk 8anagement1
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! &
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
7/32
12 Cnclusin13
14 Re.erences 2;
15 Appendices 21
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! '
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
8/32
1 Eecuti*e Summary*is s*ould be a *ig* level summary o) t*e content o) t*e report4 w*ic* can be read and appreciated by bot*ec*nical and nontec*nical readers, "ssentially4 a reader could read t*is section only and understand at a*ig* level our solution and *ow it will bene)it t*e Project 6 State 6 users,
>*ere possible ma#e obvious connections to relevant -ey Considerations4 "valuation Criteria and Project2bjectives, 7t@s also important to lin# to our strategy .a greater connection/ and #ey messages,
Response
2 !ntrductin
$,! Project 2verview*e oowoomba Second Range Crossing .SRC/ Project is t*e largest Commonwealt* 8overnment
commitment to a single road project in Eueensland@s *istory, Addressing a recognised constraint in t*eNational Land ransport Networ#4 t*e SRC will ensure )reig*t e))iciencies as well as signi)icantly improvingdriver sa)ety and community amenity,
*e SRC is a proposed bypass route to t*e nort* o) oowoomba4 appro+imately =! #m in lengt*, 7t willconnect t*e >arrego ?ig*way )rom ?elidon in t*e east4 to C*arlton .west o) oowoomba/4 and to t*e 8ore?ig*way at At*ol in t*e west, *e SRC is t*e centrepiece o) major economic development ta#ing place insout*western Eueensland and once complete will create a sa)er4 )aster and more e))icient route )orconnecting )reig*t to major ports and mar#ets
*e Ne+us 7n)rastructure consortium comprises global leaders in Public Private Partners*ips .PPP/ and t*edesign4 construction4 operation4 maintenance and )inance o) transport in)rastructure, >e bring toget*er t*edeal balance o) international leaders and *ig*ly e+perienced4 Eueenslandbased resources and o))er t*eState )ull project capability4 world@s best practice4 an unrivalled dept* o) resources4 )inancial capacity4 local#nowledge and insig*t and an enviable trac# record o) success)ul4 proven delivery o) comparable projects at aocal4 national and international level,
Ne+us 7n)rastructure is committed to wor#ing in partners*ip wit* t*e State to ac*ieve and e+ceed t*e Project2bjectives and to drive outcomes t*roug* innovation4 value )or money4 w*oleo)li)e e))iciencies and a desire toa create a worldclass transport solution )or Eueensland,
$,$ Purpose and Scope o) ReportResponse
4 Relatinship t Pr,ect %b,ecti*es*e State@s Project 2bjectives are as )ollows:
! Address a recognised constraint in t*e National Land ransport Networ# by improving t*e e))iciency o))reig*t movements and encouraging economic development
$ Deliver greater bene)its )or road users and reduce t*e number o) *eavy ve*icles and t*roug*tra))ic usingurban arterial roads in central oowoomba
< 7mprove sa)ety on t*e networ# by providing an improved standard o) range crossing wit* improved design)eatures
= 7mprove community amenity4 sa)ety and )unctionality by directing *eavy ve*icle tra))ic away )rom t*e current
range crossing and oowoomba town centre% 7mprove transport capacity over t*e range to meet )uture growt* needs in t*e region
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! !(
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
9/32
Protect and4 w*ere possible4 en*ance natural and cultural resources4 and t*e environment
& Support sustainable communities and land use development
Ac*ieve value )or money outcomes )or t*e State
' Secure timely delivery o) SRC!( Procure t*e Project in a way t*at encourages private sector innovation on tec*nical and commercial
aspects o) t*e Project,
Response
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! !!
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
10/32
5 Related Pr,ectsResponse
=,! >arrego ?ig*way Duplication
=,$ 2@5aras Road Duplication
=,< oundary Street Bpgrade
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! !$
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
11/32
6 Design Standards and 8ethdlgy
%,! Critical emban#ments and cuttingsA critical crosssection *as been identi)ied )or eac* emban#ment and cutting based on t*e *eig*t andprevailing geology,
Detailed analysis *as been underta#en on t*e )ollowing cross sections,
Table 1 Critical cutting cross sections
Feature From o otal Lengt*mG
5a+imum Cutting ?eig*t .m/
Cut ($ $$&& $&<
Cut $! !$(!$ !$(! &' %!
Cut $= !
Cut $% !==% !=(<
"mban#ment$orstcaserain)all eventE$(((
J>orst caseKgroundwaterlevel
!,( !,=
% Rapiddrawdown
Drawdown)rominundationlevel
A
2peratingasis"art*0ua#e.2"/
JAverageK orJestestimateKgroundwaterlevel
!,!% !,$!
,$ Settlement AnalysisAL" 2 " F7NAL7S"D F2LL2>7N8 C25PL"72N 2F ANAL1S7S
Table " Embankment Settlement nalysis !esults
D Appro+imate?eig*t .m/
Compressible Layer
*ic#ness.m/
"stimated Settlement .mm/
"lastic Primary Secondary
otal
,< "mban#ment Design Details
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! !
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
15/32
AL" 2 " F7NAL7S"D F2LL2>7N8 C25PL"72N 2F ANAL1S7S
Location 7tems Description
"mban#ment !& opsoil t*ic#ness
Bnsuitable t*ic#ness
Foundation preparation6groundimprovement
Partial colluvium replacement wit*roc#)ill below batter toe .see s#etc*/
"mban#ment drainage
"rosion protection measures
"rosion protection measures Roc#)ill outer Ione and vegetated batterslopes
Fill source >on )rom adjacent cuttingsatter Slopes and enc*ing !M:$?4 slope *eig*t !(m4 benc* widt*
=m
"mban#mentOoning
Oone 5RS(=Class
Oone >idt* CR .i)applicable/
Subgrade A6
Bpper Oone A6
2uter Oone A6
Core C 2ver $(m
Roc#)ill Roc#)ill % m at t*etop and
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
16/32
9 Cuttings
&,! 7nitial geometry*e initial batter slopes were designed based on t*e roc# mass weat*ering pro)ile, Roc# mass weat*ering is agood indicator to depict t*e overall condition o) t*e slopes .w*ic* is indirectly related to degree o) )racturing4strengt* and material properties/, *e initial batter slopes pro)iles are summarised in "rror: Re)erence sourcenot )ound, "ac* Ione was assigned appropriate 5o*rCoulomb parameters t*at were derived )rom lit*ologyweat*ering parametric study presented in 8! 3 Preliminary 8eological and 8eotec*nical Report, *e stabilityanalyses o) t*ese initial pro)iles were carried out using SL2P"6> so)tware,
Table # $atter slo%es for initial design
Roc# 5ass weat*ering atter slope .M:?/
Residual soils4 colluvium4 e+tremely weat*ered
basalt4 e+tremely weat*ered and *ig*ly weat*eredsedimentary roc# !M:$? .$& degrees/ to !M:!,%? .*en a)ailure mode was identi)ied4 an appropriate stability analysis .eg planar or wedge/ was carried out and t*eresults )or eac* cut presented in t*e )ollowing sections,
&,$ Slope Stability Analysis"ngineering so)tware pac#age 8eoSlope SL2P"6> Mer, $((& was used to carry out t*e cut section stabilityimit e0uilibrium analyses, *e 5orgenstern and Price .*al)3sine )unction/ met*od and optimisation o) t*ecritical slip location *ave been adopted )or t*e analyses in t*e SL2P"6>, ot* local and global stability o) t*eslip sur)ace )or t*e cut section *ave been assessed,
*e stability analyses are based on t*e selected critical cuts s*own in able !, *e summary o) t*e minimum)actor o) sa)ety )or eac* critical cut and )or eac* load case is presented in able ,
AL" 2 " F7NAL7S"D F2LL2>7N8 C25PL"72N 2F ANAL1S7S
Table & Summary of stability analyses
Location
7D Load Case 8roundwater Level
8eometry Factor o) Sa)ety Comments
Re0uired Ac*ieved
Cut !( ! Long term3PieIometric
JAverageK orJestestimateKgroundwater
level
!M:(,%? !,% $,&=8lobal and localstabilty satis)iesre0uired F2S,
$ Long term 5inimum Ru !M:(,%? !,% $,!< 8lobal and local
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! !
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
17/32
3 Ru coe))icient(,!%
stabilty satis)iesre0uired F2S,
< Long term3 wit*tensioncrac#minimum$,%m
JAverageK orJestestimateKgroundwaterlevel
!M:(,%? !,< $,&orstcaserain)alleventE$(((
J>orst caseKgroundwaterlevel
!M:(,%? !,( $,
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
18/32
eventE$(((
level!M:!? slopes
re0uired F2S,
!M:!? on allbatters
!,($
% 2peratingasis"art*0ua#e.2"/
JAverageK orJestestimateKgroundwaterlevel
!M:!,%? and!M:!? slopes
!,!% !,%
8lobal stabilitysatis)ies t*ere0uired F2S,?oriIontaldesignacceleration o)(,( 5udstone 6Claystoneparameters
Low F2S )orbenc*intersecting >5udstone 6Claystone
$ Long term
3 Ru
5inimum Ru
coe))icient(,!%
8lobal
Local!M:!,(!,%?atters.All e+ceptbottom batterslope/
!M:(,%?atters.ottom batterslope/
!,%
!,%
!,%
!,% !,
!,< $,!
!, !,'
F2S ; !,= )or
lower bound> 5udstone 6Claystoneparameters
Low F2S )orbenc*intersecting >5udstone 6Claystone
< Long term3PieIometricwit*ensionCrac#
JAverageK orJestestimateKgroundwaterlevel
Floodedtensioncrac# inresidualmaterial4minimum
$,% m dept*
8lobalLocal
!M:!,(!,%?atters.All e+ceptbottom batterslope/
!M:(,%?atters.ottom batter
slope/
!,orst CaseRain)all
J>orst caseKgroundwater
8lobal !,( !, !,& F2S ; !,= )orlower bound
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! $(
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
19/32
"ventE$(((
level Local 3 N6A > 5udstone 6Claystoneparameters
% 2peratingasis"art*0ua#e.2"/
JAverageK orJestestimateKgroundwaterlevel
8lobal
Local 3 N6A
!,!% !, !,' ?oriIontalAccelerationFactor (,( 5udstone 6Claystone
parametersCut $& ! Long term
3PieIometric
JAverageK orJestestimateKgroundwaterlevel
8lobal !,% ;65>asalt
!M!,%? and!M:(,? inResidual Soil
!,% ;!,% argeting RSQC?!%(( and?> asaltQC?!%&%(
F2S satis)ied
$ Long term3 Ru (,!%
5inimum Rucoe))icient(,!%
8lobal !,% ;$,'< 8lobal stabilitysatis)ies t*ere0uired F2S,
Local
!M:(,&? and!M:(,?atters in?>65>asalt
!M!,%? and!M:(,? inResidual Soil
!,% !,!% argeting RSQC?!%(( and
?> asaltQC?!%&%(
Desired FoS notac*ieved wit*inResidual Soilbatter at!M:(,?
< Long term3PieIometric
wit*ensionCrac#
JAverageK orJestestimateK
groundwaterlevel
8lobal
!M:(,&? and
!M:(,?atters in?>65>
!,< ;
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
20/32
Floodedtensioncrac#4minimum $,%
m dept*4 inresidual soil
asalt
!M:!,%? and!M:(,? inResidual Soil
= >orstcaserain)alleventE$(((
J>orst caseKgroundwaterlevel
8lobal
!M:(,&? and!M:(,?atters in?>65>asalt
!M:!,%? and!M:(,? in
Residual Soil
!,( ;$,% 8lobal stabilitysatis)ies t*ere0uired F2S
% 2peratingasis"art*0ua#e.2"/
JAverageK orJestestimateKgroundwaterlevel
8lobal
!M:(,&? or)latter
!,!%
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
21/32
7denti)ication o) potential )ailure modes .eg, planar4 wedge/ based on c*osen )riction angle
7) t*ere was a potential )or )ailure to occur4 t*en stability analysis was carried out )or t*e )ailure modeidenti)ied
7) t*ere was no potential )or de)ect controlled )ailures4 no bloc# )ailure stability was carried out,
*e de)ect data )rom televiewer was plotted and cluster between $ to sets were identi)ied on stereoplots )oreac* cut able ',*e mean planes identi)ied )rom t*e stereoplots were used )or #inematic analysis )ordenti)ication o) )ailure modes .>yllie !''$4 >yllie 9 5a* $((%/,
t s*ould be noted t*at in #inematic analysis4 only potential )ailure modes are identi)ied based on t*e estimated)riction cone angle, *is analysis does not include ot*er )actors suc* as t*e e))ects o) ground water4 e+ternaloads and s*ear strengt* o) discontinuities and it s*ould not be mista#en )or stability analysis,
*e conditions re0uired )or t*e various )ailure modes in roc# is as )ollow:
942 Planar yllie 9 5a* $((%/:
*e sliding plane must stri#e parallel or near parallel wit*in appro+imately $(o )rom t*e slope )ace *e sliding plane must daylig*t on t*e slope )ace
*e dip o) t*e plane must be greater t*an t*e )riction angle o) t*e plane
*e upper end o) t*e sliding sur)ace must eit*er intersect t*e upper slope .eg on benc*/ or terminate in atension crac#,
944 =edge 7N8 C25PL"72N 2F ANAL1S7S
Table ' Summary of (inematic nalysis
Location Cuttinggradient
5ajor ointSet
Dip DipDirection
ConeFrictionAngle.deg/
Potential Failure
oppling Planar >edge
Cut !( !M: (,%? ! = $
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
22/32
= .random/ !<
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
23/32
Cut $! !M: !? .L?S/ Sets ! 9 < N6A 3 Bnli#ely tooccur
N6A 3 Bnli#ely tooccur
>edge volume 3(,($medge weig*t 3(,(&t
trace lengt* 3 !mF2S 3 =,'=
>edge volume 3(,$(%medge weig*t 3(,%edge volume 3(,$%medge weig*t 3(,ttrace lengt* 3 $mF2S 3 edge volume 3(,(!edge weig*t 3(,(edge volume 3(,!((medge weig*t 3(,$edge volume 3(,((medge weig*t 3(,($ttrace lengt* 3 !mF2S 3 ,!'
>edge volume 3(,(%$medge weig*t 3(,!=t
trace lengt* 3 $mF2S 3
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
24/32
!M: !? 9!M:(,%?
N6A 3 Bnli#ely tooccur
N6A 3 Bnli#ely tooccur N6A 3 Bnli#ely to
occur
7nterbeddedSandstone 6Siltstone 65udstone
!M:!?9!M:(,%?
Sets ! 9 $ L?S 9 R?S:N6A 3 Bnli#ely tooccur
L?S 9 R?S:N6A 3 Bnli#ely tooccur
L?S:N6A 3 Bnli#ely to2ccur
R?S:
>edge volume 3(,= medge *eig*t 3(,'< onnes
race lengt* 3
%,=$ to ,= mF2S.a/ 3 !,&
Cut $& !M: (,&?.R?S/
Set ! vSet =
N6A 3 Bnli#ely tooccur
N6A 3 Bnli#ely tooccur
>edge volume 3(,($medge weig*t 3(,!(ttrace lengt* 3 !m"+ternallyapplied )orce 3(,!t>ater pressure
in slope 1esF2S 3 !,%
!M: (,&?.L?S/
Set $ vSet edge volume 3(,(!!medge weig*t 3(,($ttrace lengt* 3 !m"+ternallyapplied )orce 3No
>ater pressurein slope No
F2S 3 (,&!
!M: (,&?.L?S/
Set $ vSet =
N6A 3 Bnli#ely tooccur
N6A 3 Bnli#ely tooccur
>edge volume 3(,($=medge weig*t 3(,(,
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
25/32
F2S 3 !,=
&,= Roc#)all AnalysisAn engineering so)tware pac#age4 RocFall Mersion =,($ .)rom Rocscience/4 *as been used )or t*e assessmento) t*e cut slopes at ris# o) roc# )alls, RocFall is a two dimensional statistical analysis o) roc# )all and is basedon a lumped mass model by using t*e Newtonian e0uations o) motion and t*e conservation o) energy principleo calculate t*e #inetic energy o) a boulder )alling4 bouncing and rolling down to t*e toe o) t*e slope,
n t*e assessment o) roc# )all t*e )ollowing assumptions *ave been made:
*e release point o) a loose bloc# is assumed to be )alling )rom t*e top o) a & m or !(m batter *ig* batterslope
"ac* simulation case is assumed to release %(( loose bloc#s
wo scenarios o) contact sur)ace )or t*e roc# )all are assumed as )ollows:
Scenario A: Soil wit* little vegetation on benc* sur)ace
Scenario : Clean *ard roc# cut benc* sur)ace wit* no vegetation,
*e coe))icient o) restitution e+tracted )rom t*e RocFall manual )or t*ese scenarios in t*e analyses aresummarised in able !!below,
Table 11 Contact surface materials %arameters for !ocFall
Scenario Contact sur)ace o) materials Coe))icient o) Restitution
Rn .Normal/ R .angential/
5ean St, Dev, 5ean St, Dev,
A Clean *ard roc# cut sur)ace (,%< (,(= (,'' (,(=
Soil wit* little vegetation on cut sur)ace (,= (,(= (,' (,(=
A 9 Pavement road (,=% (,( (,' (,(
*e )riction angle o) loose bloc#s on to t*e contact sur)ace in t*e analysis is assumed to be
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
26/32
&,% Discussion and Recommendations2 " F7NAL7S"DF2LL2>7N8 C25PL"72N 2F ANAL1S7S
&,
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! $
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
27/32
8nitring and !nstrumentatin
,! "mban#ments2 " BPDA"D
,$ Cuttings2 " BPDA"D
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!! $'
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
28/32
3 Risk 8anagement2 " BPDA"D F2LL2>7N8 C25PL"72N 2F ANAL1S7S
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!!
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
29/32
1; Cnclusin2 " BPDA"D F2LL2>7N8 C25PL"72N 2F ANAL1S7S
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!!
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
30/32
11 Re.erences
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!!
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
31/32
12 Appendices Appendi+ A 3 "mban#ment Design Calculations
Appendi+ 3 Cutting Design Calculations
oowoomba Second Range Crossing Project SR7CL1 C255"RC7AL 7N C2NF7D"NC"A! Design: 8$ Cut and "mban#ment Stability Strategy$%&$$'(!!
8/10/2019 G2 Cut and Embankment Strategy Report_20141202_v1
32/32