Page 148 - 《水资源与水工程学报》2022年第1期
P. 148
!33 " ! 1 # & ' ( ) & * + , - Vol.33No.1
2022 $ 2 % JournalofWaterResources&WaterEngineering Feb.,2022
DOI:10.11705/j.issn.1672-643X.2022.01.20
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BCDEF:TV139.14 GHIJK:A GLMF:1672643X(2022)01014408
Optimizationofseepagecontrolsystem foradiversionhydropower
stationonadeepoverburdenfoundation
1
1,2
1,2
1
1,2
WANGShuo,SHENZhenzhong ,JIYang,SUNYiqing ,ZHANGWenbing
(1.CollegeofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing210098,China;
2.StateKeyLaboratoryofHydrology-WaterResourcesandHydraulicEngineering,HohaiUniversity,Nanjing210098,China)
Abstract:Inviewofthedeepoverburdenfoundationoftheheadhydraulicprojectofadiversionpower
stationwhichresultsinhighcostfortheconstructionoftheseepagecontrolsystemaccordingtothede
signedscheme ,athreedimensionalfiniteelementmodelforseepageanalysisisestablishedaccordingto
thegeologicalstructure,landformandseepagecontrolsystemdesignofthedamsiteareaoftheproject.
Firstly,thedistributioncharacteristicsofseepagefieldinthereservoirarea,theamountofseepage
throughvariousbuildingsandtheseepagestabilityofthekeypartsareanalyzed.Theresultsshowthatthe
designedschememeetstheaboverequirements.Secondly ,basedonthedesignedscheme,theinfluence
ofchangingthedepthofimperviouscurtainandthelengthofcurtaingroutingholesontheleftandright
banksontheleakageiscalculatedandanalyzed.Thentheantiseepageschemeisoptimizedaccordingto
theanalysisresults.Theoptimizationresultsshowthatthedepthofimperviouscurtaincanbeshortened
tothemiddlelinebetweenthemicropermeablezoneandweakpermeablezone ,andthelengthofcurtain
groutingholesontheleftandrightbankscanbeshortenedbyabout10m ,soastoreducetheeconomic
costofseepagecontrolsystemonthebasisofeffectivecontrolofthetotalleakageinthereservoirarea.
Keywords:deepoverburden;leakage;imperviouscurtain;threedimensionalfiniteelementmodel;
schemeoptimization;diversionhydropowerstation
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