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                           Monitoringandcharacterizationoftheentireurbanfloodingprocessin
                                       thetypicalsouthernplainrivernetworkarea

                                                    1,2
                                                                                        1,2
                                                                      1,2 
                              LIXiaoning 1,2,3 ,YUYue ,WANGChuanhai ,ZHENGShiwei ,
                                                                      1,2
                                                         3
                                                 LILingjie,CHENGang
                               (1.CollegeofHydrologyandWaterResources,HohaiUniversity,Nanjing 210098,China;
                   2.StateKeyLaboratoryofHydrology,WaterResourcesandHydraulicEngineering,HohaiUniversity,Nanjing 210098,China;
                                3.KeyLaboratoryofFlood&DroughtDisasterDefense,theMinistryofWaterResources,
                                        NanjingHydraulicResearchInstitute,Nanjing 210029,China)
                  Abstract:Inthesouthernplainrivernetworkarea,therearehighlyurbanizedpolderareasformedbydikes,
                  gates,andpumpingstations,butthecharacteristicsandsimulationmethodsofurbanfloodinundationinpolderar
                  easaffectedbyrainfallprocessesandpumpingstationshaveyettobeinvestigated.Inthispaper ,theentireprocess
                  oflong - termmonitoringofrainfall,pipeandriverwaterlevelandflowwerecarriedoutattheexperimentalfieldof
                  urbanrunoffandfloodinChangzhou.Additionally ,thedepthandextentofurbanfloodinundationaremonitored
                  automaticallybydeployingwaterlevelmetersandvideomonitoringequipment.Themonitoringdataindicatesthat
                  thefluidityofthepipeandriverinthepolderareaisverypoor ,thepipeissubmergedforanextendedperiodof
                  time ,andthepipe’swaterdepthisgreaterthan0.76mwith75% ofthetimeduringthemonitoringperiod.Urban
                  floodinundationstilloccurswhenmanholesdonotoverflowandarenotsurcharged;itisconcentratedinlow - lying
                  areasoftheroad ,anditsdepthandscopeareprimarilyinfluencedbyprecipitation,terrain,grateinlet,and
                  pumpingstation.Theopeningofthepumpingstationincreasesthedrainagecapacityofthepipeandmitigatesurban
                  floodingtosomedegree.Consequently,basedontherainfallforecastandreal - timemonitoringdataoftheriver,
                  pipenetwork,andwaterlogging,timelyregulationofthewaterlevelinthepolderareacaneffectivelyalleviate
                  floodinundation.Neithertheimpactofgrateinletcollectioncapacitynorpumpingstationshouldbeoverlookedin
                  thefloodinundationsimulation.Thestudycanserveasaguideforconstructinganonlinemonitoringplatformforthe
                  entireurbanfloodingprocess ,aswellasabasisfortheurbanfloodinundationprocessgeneralization.
                  Keywords:urbanfloodinundation;mechanismsanalysis;entire - processmonitoring;fieldexperiment


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