Page 195 - 《水资源与水工程学报》2025年第1期
P. 195
!36 "!1 # & ' ( ) & * + , - Vol.36No.1
2025 $ 2 % JournalofWaterResources&WaterEngineering Feb.,2025
DOI:10.11705/j.issn.1672-643X.2025.01.21
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KLMNO:TV554;U451 .2 PQRST:A PUVO:1672643X(2025)01019108
Parametriccharacterizationandsurrogatemodelbasedpredictionof
theexcavationdeformationbehaviorsofhydraulictunnels
LIUZhifeng,XULei,XIAChaojie,CHENJinpeng,YANXinpeng
(CollegeofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing210024,China)
Abstract:Understandingthedeformationbehaviorsofhydraulictunnelsduringexcavationisthepremise
ofdesigningexcavationsupportschemes.Conventionalnumericalsimulationmethodsaretimeconsu
ming,andusuallyinvolvealargeamountofcomputationswhenpredictingtunnelexcavationdeformation
behaviors.Toovercomethesedifficulties ,weadoptedathreeparameterexponentialfunctiontocharac
terizethetunnelexcavationdeformationcurve ,andproposedasurrogatemodelbasedmethodcapableof
rapidlypredictingtunnelexcavationdeformationbehaviors ,usingtheLatinhypercubesampling(LHS)
methodandtheKrigingmodel.Thentheimplementationprocessofthismethodwasdiscussedindetail.
Takingatypicalwaterconveyancetunnelprojectasthecasestudy ,weestablishedarapidpredictionsur
rogatemodeltopredictthedeformationcharacteristiccurvesforthreetypicaltunnelsections ,withthe
burieddepthandmechanicalparametersofthesurroundingrockastheinput ,andthedeformationchar
acterizationparametersastheoutput.Theresultsshowthatthemodelpredictionisinagoodagreement
withthatofthefiniteelementsimulationanalysis ,validatingthepredictionaccuracyandadaptabilityof
theproposedmethod.Comparedwithconventionalnumericalsimulationmethods ,theproposedmethod
cangreatlyimprovethepredictionefficiencyoftheexcavationdeformationbehaviorsofhydraulictunnels.
Keywords:hydraulictunnel;excavationdeformationbehavior;rapidprediction;parametriccharacter
ization;surrogatemodel
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