Page 15 - 《水资源与水工程学报》2025年第1期
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!36 "!1 #                         & ' ( ) & * + , -                               Vol.36No.1
               2025 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2025

            DOI:10.11705/j.issn.1672-643X.2025.01.02


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             UrbanfloodriskassessmentbasedonAHP-CRITIC-greyrelationalanalysis

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                          YUANXimin ,SUZhi ,WANGLina,TIANFuchang ,GUOLibing
                   (1.StateKeyLaboratoryofHydraulicEngineeringIntelligentConstructionandOperation,TianjinUniversity,Tianjin
                      300350,China;2.SchoolofCivilEngineering,TianjinUniversity,Tianjin300350,China;3.NorthChina
                         MunicipalEngineeringDesign&ResearchInstituteCo.,Ltd.,Tianjin300074,China;4.Hanyan
                            CanalManagementOfficeofNingxiaHuiAutonomousRegion,Yinchuan750001,China)
               Abstract:Inviewoftheurgentneedsofurbanfloodcontrolriskmanagement,indicatorsfromaspectsof
               hazardaffectedbodies ,hazardformingenvironments,andhazardinducingfactorsareselectedtoconstruct
               anintegratedfloodriskassessmentsystembasedondisastertheory.Then ,theAHP-CRITICmethodis
               coupledtocalculatethecomprehensiveweightofeachindicator ,thegreyrelationalanalysismethodisused
               tocalculatethefloodriskofeachunit,andthenaturalbreakpointmethodisadoptedtoclassifytherisklev
               els.TakingthemainurbanregionofSanyaCityastheresearchobject,afloodriskassessmentmodelises
               tablishedtocarryoutthefloodrisklevelzoning.Theresultsshowthattheproportionofareaswithfourlev
               elsoffloodriskfromextremelyhightolowinthemainurbanregionofSanyaCityis5.60%,13.84%,
               33.04% and47.52%,respectively.Theextremelyhighriskandhighriskareasaremainlydistributedin
               thelowerreachesoftheSanyaRiverandtheEastRiverofSanya ,aswellasthelowlyingcontiguousculti
               vatedlandonbothsidesofthelowerreachesoftheTangtaRiver.Thecomparisonanalysisprovesthatthe
               floodriskassessmentmodelbasedonAHP-CRITIC-greyrelationalanalysisissuperiortoanyindividual
               model ,whichcanprovideamorereasonabledistributionoffloodrisks.Theresearchresultsandfloodrisk
               assessmentmodelcanprovideareferenceforfloodcontrolanddisasterreductionplanningofSanyaCityand
               othercitiesfacingsimilarproblems.

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