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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                    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 ,athreedimensionalfiniteelementmodelforseepageanalysisisestablishedaccordingto
                 thegeologicalstructure,landformandseepagecontrolsystemdesignofthedamsiteareaoftheproject.
                 Firstly,thedistributioncharacteristicsofseepagefieldinthereservoirarea,theamountofseepage
                 throughvariousbuildingsandtheseepagestabilityofthekeypartsareanalyzed.Theresultsshowthatthe
                 designedschememeetstheaboverequirements.Secondly ,basedonthedesignedscheme,theinfluence
                 ofchangingthedepthofimperviouscurtainandthelengthofcurtaingroutingholesontheleftandright
                 banksontheleakageiscalculatedandanalyzed.Thentheantiseepageschemeisoptimizedaccordingto
                 theanalysisresults.Theoptimizationresultsshowthatthedepthofimperviouscurtaincanbeshortened
                 tothemiddlelinebetweenthemicropermeablezoneandweakpermeablezone ,andthelengthofcurtain
                 groutingholesontheleftandrightbankscanbeshortenedbyabout10m ,soastoreducetheeconomic
                 costofseepagecontrolsystemonthebasisofeffectivecontrolofthetotalleakageinthereservoirarea.
                 Keywords:deepoverburden;leakage;imperviouscurtain;threedimensionalfiniteelementmodel;
                 schemeoptimization;diversionhydropowerstation






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