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复杂水沙条件河流城市取水口水质模拟研究 Abstract Withtheaccelerationofurbanizationandtheincreaseofwaterdemand,thewaterqualityofurbanwaterintakehasbeenacontroversialissue.Thisstudyfocusesonthewaterqualitysimulationofurbanwaterintakeundercomplexwaterandsedimentconditions.Firstly,thewaterandsedimentconditionsofthestudyareaareanalyzed,andthenthemonitoringdataofwaterqualityinthestudyareaarecollectedandanalyzedtodeterminethemainpollutantsofwaterquality.Then,basedontheEPANETmodelandHEC-RASmodel,thewaterqualitysimulationmodelofcomplexwaterandsedimentconditionsinurbanwaterintakeisestablished.Finally,theaccuracyofthemodelisverifiedbycomparingthesimulationresultswiththemonitoringdata.Theresultsshowthatthemodelcanaccuratelysimulatethewaterqualityoftheurbanwaterintakeundercomplexwaterandsedimentconditions,whichprovidesascientificbasisfordecision-makersandmanagerstocontrolandprotectthewaterqualityofurbanwaterintake. Keywords:urbanwaterintake,waterquality,complexwaterandsedimentconditions,simulation,EPANET,HEC-RAS Introduction Withtherapiddevelopmentofurbanizationandindustrialization,thewaterdemandinurbanareasisincreasingdaybyday,andthewaterqualityofurbanwaterintakehasbecomeacrucialissue.Thewaterqualityofurbanwaterintakeisdirectlyrelatedtothesafetyandhealthofcitizensandthesustainabledevelopmentofsociety.Therefore,itisnecessarytostudythewaterqualityofurbanwaterintakeandestablishascientificwaterqualitysimulationmodel. Duetothecomplexityofthehydrologicalenvironmentandsedimenttransportinrivers,thesimulationofwaterqualityinurbanwaterintakeisoftenaffectedbymanyfactors,suchasflowvelocity,sedimentconcentration,andpollutantdiffusion.Therefore,itisessentialtostudytheimpactofthesefactorsonthewaterqualityofurbanwaterintakeandestablishawaterqualitysimulationmodelthatconsiderstheinfluenceofthesefactors. Inthisstudy,wefocusonthewaterqualitysimulationofurbanwaterintakeundercomplexwaterandsedimentconditions.Thespecificresearchmethodsandresultsarediscussedinthefollowingsections. MaterialsandMethods StudyArea Thestudya