Page 140 - 《水资源与水工程学报》2023年第3期
P. 140
!34 " ! 3 # & ' ( ) & * + , - Vol.34No.3
2023 $ 6 % JournalofWaterResources&WaterEngineering Jun.,2023
DOI:10.11705/j.issn.1672-643X.2023.03.17
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ABCDE:TU992 FGHIJ:A FKLE:1672643X(2023)03013608
Designrainfallcharacteristicsaffectsurbanfloodinundationsimulation
2
1
1
3
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SONGRuining,XIEFang,LIXiaoning,ZHAOTianming,QINYi
(1.BeijingEnterprisesWaterGroup(China)InvestmentLimited,Beijing100102,China;2.Collegeof
HydrologyandWaterResources,HohaiUniversity,Nanjing210098,China;3.BeijingUrban
ConstructionDesign&DevelopmentGroupCo. ,Limited,Beijing100045,China)
Abstract:Rainfallisoneoftheleadingcausesofurbanfloodinundation,anddifferentrainfallcharacter
isticshavedifferentinfluencesontheurbanfloodinundationrisk.Inordertoinvestigatetheinfluences,
anurbanfloodinundationmodelofasoutherncityinChinawasestablishedtosystematicallyanalyzethe
influenceofdesignrainfallpatternanddurationcharacteristicsonurbanfloodsimulationresultswiththe
applicationoftheintegratedcatchmentmodel (InfoWorksICM).Toevaluatefloodinundationriskinthe
studyarea,3rainfallpatternsand3rainfalldurationunder4returnperiodswerechosenforthecombina
tionsofatotalof36differentdesignrainfallscenarios.Bycomparingtheresultsofthescenariosinterms
ofinundationdepth ,inundationareaandinundationvolume,itwasfoundthatunderthesamerainfall
patternandreturnperiod ,theinfluenceofrainfalldurationoninundationdepthvarieswithinacertain
range;inallscenariosofdifferentrainfallpatternsandduration,thelocationsoftheinundationsitesba
sicallyremainthesame;theinundationareaisaffectedbybothrainfallpatternsandduration,peakinun
dationvolumeisinfluencedmorebyrainfallpatternsthanbyrainfallduration ,buttotalinundationvol
umeisinfluencedmorebyrainfalldurationandlessbyrainfallpatterns.Thisstudyquantifiedtheinflu
enceofdifferentdesignrainfallcharacteristicsontheurbanfloodinundationsimulationresultswhichaims
toprovideatechnicalbasisforurbanfloodinundationearlywarningandemergencymanagement.
Keywords:urbanfloodinundation;designrainfall;rainfallpattern;rainfallduration;InfoWorksICM
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