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:1672643X(2023)05009808
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,sedimentationselfpurification,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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