Page 29 - 2022年第53卷第10期
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Optimizationstudyofdrought - limitedwaterlevelandwatersupplystrategyofthe
                          reservoirintheirrigationdistrictbasedonfuzzysetpairanalysismethod

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                                 ZHANGLibing ,BAIYachao,JINJuliang ,YUHaiguan,
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                                               ZHOUYuliang ,ZHOUTing
                                (1.CollegeofCivilEngineering,HefeiUniversityofTechnology,Hefei 230009,China;
                    2.InstituteofWaterResourcesandEnvironmentalSystemEngineering,HefeiUniversityofTechnology,Hefei 230009,China;
                                  3.SchoolofEngineering,AnhuiAgriculturalUniversity,Hefei 230036,China)
                  Abstract:Withsocioeconomicdevelopmentandclimaticchange,regionaldroughtproblemsareincreasinglyseri
                  ousandtheroleofreservoirsindroughtresistancebecomesmoreandmoreprominent.Theproposalandapplication
                  ofdrought - limitedwaterlevelisofgreatsignificanceforbringingintoplaytheregulationroleoflargeandmedium -
                  sizedreservoirsindroughtresistanceandalleviatingthedroughtsituationinthebasin.Aimingatthepresentstudy
                  stateofdrought - limitedwaterlevel ,MeishanReservoirintheShiheIrrigationDistrictwastakenasanexamplein
                  thispaper.Firstly ,theinitialstageddrought - limitedwaterlevelwascalculatedbasedonurbanwatersupply,
                  agriculturalirrigation,hydroelectricpowergeneration,ecologicalenvironmentandotherfactors.Thenthefuzzyset
                  pairanalysismethodwasusedtoconstructthecomprehensiveevaluationmodelofwaterresourcesystem operation
                  effectofreservoirandirrigationdistrict.Afterthat ,withpurposeoftheoptimizationofcomprehensiveoperationof
                  waterresourcessystem,theimmunegeneticalgorithm wasusedtooptimizetheoptimizationvariablesofthe
                  drought - limitedwaterlevelandirrigationwatersupplylimitmeasures (basedonthecharacteristicsofreservoir
                  waterinflowandcropgrowthcharacteristics).Finally,thecomprehensiveoperationeffectofreservoirwaterre
                  sourcessystem withorwithoutdroughtlimitwaterlevelwascompared ,andthechangeofreservoirwatersupply
                  andtheriskofcroplossinirrigateddistrictunderdifferentcontrolmethodswereanalyzed.Thisstudyshowthat
                  comparedwiththedroughtlimitwaterlevelwitheconomicbenefitasthesinglegoal,theoptimizeddroughtlimit
                  waterlevelinthisstudyhasgreatlyimprovedinmanyindicators ,includingtheamountofreservoirfillingand
                  pondfillingincreasedby5.55millioncubicmetres,theamountofabandonedwaterdecreasedby5.66million
                  cubicmetres,thewatersupplyofponddam increasedby2.53millioncubicmetres,theeconomicbenefitin
                  creasedby460,000yuan,thecropyieldreductiondecreasedby3.32% andtheriskofcroplossduetodrought
                  wasreducedby3.15%.Itcanbeseenthattheapplicationofsystematiccomprehensiveevaluationdecisionis
                  beneficialtoimprovethecomprehensiveoperationeffectofthereservoirirrigationdistrictsystem ,andtheutiliza
                  tionefficiencyofwaterresourcesandtheeconomicbenefitofthereservoirarealsoimproved.Comparedwithem
                  piricalcontrol,theoptimalwatersupplystrategyadaptedtoreservoirinflowandcropgrowthcharacteristicsunder
                  droughtlimitwaterlevelcaneffectivelyreducetheyieldreductionrateofmiddlericeinirrigatedareasandprovide
                  strongsupportforthesmoothimplementationofdroughtlimitwaterlevelandagriculturalirrigationindroughtperiod.
                  Keywords:large - scalereservoirsandirrigationareas;drought - limitedwaterlevel;simulationandoptimization;
                  fuzzysetpairanalysismethod;croplossrisk


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