Page 153 - 《水资源与水工程学报》2022年第3期
P. 153

!33 " ! 3 #                       & ' ( ) & * + , -                               Vol.33No.3
               2022 $ 6 %               JournalofWaterResources&WaterEngineering                 Jun.,2022

            DOI:10.11705/j.issn.1672-643X.2022.03.19


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                 8IBJK:TV61   LMNOP:A    LQRK:1672643X(2022)03014907

                        Sensitivityandinversionanalysisofpermeabilityparameters
                                         inmainzonesofashiplockhub

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                                                                                       1
                                                       1,2
                                                                         1
                          1
               JINHongjie,GANLei,SHENZhenzhong ,YANGJinmeng,SUNYiqing,ZHANGWenbing
                 (1.CollegeofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing210098,China;2.StateKey
                   LaboratoryofHydrology -WaterResourcesandHydraulicEngineering,HohaiUniversity,Nanjing210098,China)
                 Abstract:Thedeterminationofpermeabilityparametersisthebasisofseepageanalysisinhydraulicengi
                 neering ,andtheinversionofthemisoneoftheeffectivemeanstoobtainthematerialpermeabilitycoeffi
                 cientoftheproject.Inordertoquantifytheinfluenceofpermeabilitycoefficientofthemainzoneofa
                 shiplockontheseepagefieldofthehub ,athreedimensionalseepagefiniteelementanalysismodelof
                 thelargeshiplockwasestablished.Thewaterheadvaluesofdifferentmeasuringpointsweretakenasin
                 dicators ,andthethreelevelorthogonaltestswiththepermeabilitycoefficientoftheconcretelockbody,
                 bedrock,antiseepagecurtainanddrainageholeasfactorsweredesignedtocarryoutthesensitivityanal
                 ysisofpermeabilitycoefficientofeachzonetotheshiplockseepagefield.Then,thematerialpermeabili
                 tycoefficientofthemainzonewasinverselydeterminedbyvariabletolerancemethod.Theresultsshow
                 thatthesensitivityofthepermeabilitycoefficientofeachzonetothewaterheadofthemeasuringpoints
                 wascurtain ,bedrock,holecurtainandconcretefromhightolow,amongwhichtheinfluenceofcurtain,
                 bedrockandholecurtainweremoresignificant.So,theinversionshouldfocusonthepermeabilitycoeffi
                 cientofthezonesofhighinfluencesuchasthecurtainandbedrock.Themaximumerrorbetweenthecal
                 culatedandmeasuredvaluesofinversionwas2.37%,andthepermeabilitycoefficientsofthecurtainand
                                      -6
                                                      -6
                 bedrockwere3.04×10 and5.51×10 cm/s,respectively.Theinversionparameterscanbeused
                 fortheseepagestabilityanalysisoftheshiplock ,andtheresearchresultscanprovidesomereferencefor
                 similarprojects.
                 Keywords:shiplock;permeabilitycoefficient;inversionanalysis;orthogonaltest;sensitivityanalysis
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