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                               Studyonstorm floodcontrolinmulti - scalespongecitysystem

                                                                           2
                                                                                          2
                                          1,2
                              CHENQiuling ,LINKairong    1,3,4 ,CHENWenlong,HUXiaozhang
                                (1.SchoolofCivilEngineering,SunYat - SenUniversity,Guangzhou 510275,China;
                                     2.PearlRiverHydraulicResearchInstitute,Guangzhou 510611,China;
                                3.GuangdongKeyLaboratoryofMarineCivilEngineering,Guangzhou 510275,China;
                        4.GuangdongEngineeringTechnologyResearchCenterofWaterSecurityRegulationandControlforSouthernChina,
                                                   Guangzhou 510275,China)

                  Abstract:Theopennessandfluidityofrainwatermaketheoccurrenceofurbanflooddisasterhasmulti - scalechar
                  acteristic.Therearealsomanylevelsandscalesofplanningandconstructioninthespongecitysystem ,andthe
                  connotationandfloodcontrolobjectivesofeachlevelscalearedifferent.BasedontheSWMM model ,thispaper
                  takesthreedifferentspatialscaleareas (localcatchmentunit,urbancatchmentareaandurbansmallwatershed)
                  locatedinGuangzhouastheresearchobject.Throughtheanalysisofthepresentsituationandthedesignandsimu
                  lationofspongereconstructionscheme ,thereasonablesettingofstorm floodcontrolmeasuresfordifferentscale
                  spongesystems,andthewaytoachievethecomprehensivecontrolgoalofurbandrainageandpluvialfloodpreven
                  tionandspongecityconstructionissystematicstudiedwithpracticalcases.Theresultsshowthatinthesmall - scale
                  spongesystem ,thecontrolofsystemrunoffandoutflowfactorsshouldberealizedthroughmicrocontrolmeasures,
                  andinthemediumandlarge - scalespongesystem,thecontrolmeasuresofgreenandgrayinfrastructure,pipe
                  canalandregulationandstoragefacilities ,andthecombinationofsourceandterminalshouldbetakentorealize
                  thecontrolofpeakflowandthemitigationofpondingrespectively.Theresearchcanprovideaclearreferencefor
                  theoverallplanningandconstructionofspongecityandtheplanning ,designandresearchofspongecityindiffer
                  entsingle - scaleregions.
                  Keywords:stormwaterandfloodcontrol;spongecity;spatialscale;SWMM model


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