Page 136 - 《水资源与水工程学报》2023年第5期
P. 136

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

            DOI:10.11705/j.issn.1672-643X.2023.05.15


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                 EFGHI:TV697.1   JK7LM:A    JNOI:1672643X(2023)05013208
                 WatertemperaturestratificationcharacteristicsofXiluoduReservoirin

                     ecologicalregulationperiodundertheconditionofinflowchange

                                                              3,4
                                                                                         1
                                                                             4
                                           1,2
                              DAILingquan ,ZHANGQingsen ,RENYufeng,CHENLei,
                                                               1
                                                                                  4
                                                 1
                                      JIANGWei,DAIHuichao,TANGZhengyang
             (1.YangtzeRiverEcoenvironmentalEngineeringResearchCenter,ChinaThreeGorgesCorporation,Beijing100038,China;2.Hubei
             KeyLaboratoryofThreeGorgesProjectforConservationofFishes ,Yichang443100,China;3.HubeiFieldObservationandScientific
                  ResearchStationsforWaterEcosysteminThreeGorgesReservoir ,Yichang443002,China;4.HubeiKeyLaboratoryof
                       IntelligentYangtzeandHydroelectricScience ,ChinaYangtzePowerCo.,Ltd.,Yichang443133,China)
                 Abstract:InordertofindouttheverticaldistributioncharacteristicsofwatertemperatureinXiluodu
                 Reservoirduringecologicalregulationperiodundertheconditionofinflowchange,atwodimensionalwa
                 tertemperaturemodelofXiluoduReservoirwasestablishedbasedonthemeasuredtopographicandhydro
                 logicaldatausingtheresearchmethodsofonsitewatertemperaturemonitoringandCE-QUAL-W2wa
                 tertemperaturenumericalsimulation.Thedynamicchangeprocessofwatertemperatureofthereservoir
                 fromJanuary15toApril30 ,2021wassimulated,andthetwodimensionalwatertemperaturedistribution
                 lawofthereservoirareaandtheinfluenceofdifferentoutletelevationsonthedischargewatertemperature
                 duringtheecologicalregulationperiod(MarchtoApril)wereemphaticallyanalyzed.Resultsshowedthat
                 thetemperaturedifferencebetweenthesurfaceandbottomwaterinfrontofthedamofXiluoduReservoir
                 occurredinmidMarch,whichreached2.02℃ inlateMarch,andtheverticaltemperaturegradientwas
                 within0.10℃/m.InApril,themaximum verticaltemperaturedifferencegrewevenlarger,which

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