Page 204 - 《水资源与水工程学报》2023年第1期
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                 totestifytheremediationeffectofdiversionmeasures.Theresultsshowthatthesubwaystationstructure
                 canbedividedintothreecategories ,namely,thedoublelayerseepagestructurewithgravel-magmatic
                 rockpores-fissuresinthesoillayer(stationA),theseepagestructurewithgravel-limestonepores-
                 karstinthesoillayer (stationB)andthesinglelayerporeseepagestructurewiththickgravelinthesoil
                 layer(stationC).Theinfluenceofsubwayfoundationpitconstructiononthehydrodynamicconditionsof
                 thesurroundingoriginalseepagefieldiscloselyrelatedtostratumstructure.Theconstructionofthesub
                 waystationleadstotherisingofthewaterlevelontheupstreamfaceandthefallingofthewaterlevelon
                 thedownstreamface ,themaximumbackwaterheightoftheupstreamfaceofstationA,stationBandsta
                 tionCis0.40,0.32and0.62m,respectively.Theinfluencerangeofgroundwaterflowfieldisclosely
                 relatedtogeologicalconditions,thenumberofstationsandtheanglebetweenthedirectionsofstation
                 constructionandwaterflow.Generallyspeaking,theinfluencerangeoftheupstreamfaceislargerthan
                 thatofthedownstreamface.Diversionmeasurescanrestorethegroundwaterseepagefieldtothegreatest
                 extent,andtheEuclideanclosenessbetweenthefallenbackwaterlevelandthenaturalwaterlevelat
                 eachstationisgreaterthan0.98.However,thenumberandlocationofdiversionmeasuresareaffected
                 bymultiplefactorssuchaswaterflowangle,geologicalstructure,hydrodynamicconditionsandsoon,
                 whichshouldbeconsideredaccordingtotheactualsituation.Theresearchresultscanprovideascientific
                 referencefortheharmoniouscoexistenceofsubwayengineeringconstructionandgroundwaterenvironmen
                 talprotection.
                 Keywords:karstwaterseepagefield;flowfieldrestoration;diversionmeasure;numericalsimulation;
                 subwayconstruction

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