Page 102 - 《水资源与水工程学报》2023年第5期
P. 102

! 34 " ! 5 #                      & ' ( ) & * + , -                               Vol.34No.5
               2023 $ 10 %              JournalofWaterResources&WaterEngineering                 Oct.,2023

            DOI:10.11705/j.issn.1672-643X.2023.05.11


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                 EFGHI:X524   JK7LM:A    JNOI:1672643X(2023)05009808

                      Importanceanalysisoffactorsaffectingthewaterenvironmental
                             capacityoflakereservoirbasedonadynamicmodel

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                   SUNYuying,CHENLiangang,CHENShaoying,XUYifan,JIANGKefang,JinQiu
                 (1.StateKeyLaboratoryofHydrology-WaterResourcesandHydraulicEngineering,NanjingHydraulicResearchInstitute,
                    Nanjing210029,China;2.JiangsuInstituteofWaterConservancy,Nanjing210017,China;3.Urbanizationand
                                Urban -RuralPlanningResearchCenterofJiangsu,Nanjing210000,China)
                 Abstract:Factorssuchaslakereservoirinflowrunoff,reservoirsurfaceevaporation,atmosphericdryand
                 wetsedimentation,precipitationinthereservoirarea,sedimentationselfpurification,watertemperature
                 fluctuation,unevenmixing,storagecapacitychange,etc.willallaffectthesizeofthewaterenvironmen
                 talcapacityofthelakereservoir.Todeterminethequantitativeimpactofeachfactor ,adailydynamic
                 calculationmodelofwaterenvironmentalcapacitywasestablishedforthecalculation ,andthefactorswere
                 dividedintophysicalfactors ,calculationparameters,andreservoirmanagementobjectivesaccordingto
                 theirinputcharacteristics.Thenthecalculationresultswerecomparedandanalyzedwiththecapacity
                 benchmarkvalueobtainedfromfullfactoranalysis.Theresultsshowthatamongphysicalfactors,thein
                 flowrunoffhasthestrongestcorrelationwithTNcapacityresultsandtheprecipitationinthereservoirarea
                 hasthegreatestimpactonthedeviationofTNcapacityresultsunderthebasicdesignhydrologicalcondi
                 tions.Correctionfactorofwatertemperature αincalculationparametershasthegreatimpactonTNca
                 pacity,anincreaseof5% correspondstoabiasvalueof8.27% inTNcapacity.Waterqualitymanage
                 mentobjectiveinreservoirmanagementobjectiveshasthegreatestimpactonTNcapacityandisthemost
                 influencingfactorofallfactors.Thequantitativeanalysisclarifiestheinfluencingdegreeofeachfactoron
                 thecapacityaccountingresult ,andprovidesatechnicalsupportforsimplificationandimprovementofthe
                 capacityaccountingmethod.

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