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Evaluationoffloodresourceutilizationpotentialbasedon
identificationmodelforinflowflood
1,6
1,2,3
1,4,5
2
3
HUANGJing ,TANChao ,CHENXiaohong,LIJiqing,QIUJing
(1.GuangdongResearchInstituteofWaterResourcesandHydropower,Guangzhou 510635,China;
2.CenterforWaterResourcesandEnvironment,SchoolofCivilEngineering,SunYat - senUniversity,Guangzhou 510275,China;
3.SchoolofWaterResourcesandHydropowerEngineering,NorthChinaElectricPoweruniversity,Beijing 102206,China;
4.StateJointEngineeringLaboratoryofEstuaryHydraulics,Guangzhou 510610,China;
5.GuangdongProvincialScienceandTechnologyCollaborativeInnovationCenterforWaterSafety,Guangzhou 510610,China;
6.GuangdongKeyLaboratoryofHydrodynamicResearch,Guangzhou 510610,China)
Abstract:Evaluationoffloodresourceutilizationpotentialisaprerequisitefortherationalallocationofwaterre
sourcesandstoragecapacityinawatershed.Inresponsetotheproblemofunevenspatiotemporaldistributionofwa
terresourcesinChina ,aninflowfloodidentificationmodelwasestablishedbasedontheKolmogorov - Smirnovtest,
improvedpeak - overthresholdmethod,andtime - varyingparameterswithPoissondistributionmodel.Itaimstoa
chievethetransformationofinconsistencyrunofftimeseriesto “independentidenticaldistribution”samples,andto
identifyanddeducerepresentativefloodhydrographofinflowflood.Anevaluationmethodoffloodresourcesutiliza
tionpotentialinreservoirgroupswasproposedbasedonconstraintssuchasthecomprehensiveregulationandstorage
capacityofthewatershedandwaterdemand.Itaimstoidentifykeyconstraints ,definereservedfloodcontrolstor
agecapacityandwaterlevelfloatingspacetobalancefloodcontrolandbenefitfunctions.TheJinxiaFourReser
voirs ,whichconsistofWudongde,Baihetan,Xiangjiaba,andXiluoducascadedreservoirsinthelowerJinsha
River ,wereusedasacasestudy.Theresultsshowthat1998and2002aretheconsistencychangepointsofthe
runoffseriesfromJunetoNovemberatXiangjiabaHydrologicalStation.Themaintypeofinflowfloodisshort - fat ,
andthe3 - dayfloodvolumeisajointoperationdecisioncharacteristicparameterthatshouldbegivenmorepriority
thanthefloodpeak.JinxiaFourReservoirsareconstrainedbystoragecapacity ,whenencounteringfloodswitha
designstandardofonce - in - a - centuryorbelow ,theutilizationpotentialoffloodresourcesis3.727billioncubic
meters.Itisrecommendedtocontinuouslyoptimizethestoragecapacitybyraisingthewaterlevelto952.26m ,
806.77m,576.31m,and373.99m insequenceofJinxiaFourReservoirs.Thisworkaimstoprovidereference
fortheoptimalallocationofwaterresourcesandstoragecapacityinthewatershed.
Keywords:evaluationoffloodresourceutilizationpotential;identificationofinflowflood;improvedpeak - over
thresholdmethod ;reservefloodcontrolstoragecapacity;jointoperationofreservoirgroup
(责任编辑:耿庆斋)
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