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                            Analysisonstabilityofemergencypluggingofsluicegatebreakdown

                                                                 1
                                                    2
                                     1
                                                                                                  1
                                                                               1
                       XIAOChenguang,ZHANGXiao,SUNYuming,CAOXiuqing,JIANGShangming
                             (1.WaterResourcesResearchInstituteofAnhuiProvinceandHuaiheRiverCommission,Ministryof
                                    WaterResourcesofthePeople ’sRepublicofChina,Hefei 230088,China;
                                     2.WaterResourcesDepartmentofAnhuiProvince,Hefei 230022,China)
                  Abstract:Sluiceisoneoftheimportanthydraulicstructuresondike,whichhasthefunctionsofdrainage,irriga
                  tionandfloodcontrol.Theunexpectedfloodleakagecausedbythecollapseofsluicegatesinfloodseasonwillbring
                  disastrousconsequencesandseriouslyaffectthesafetyofpeople ’slivesandpropertiesintheprotectedareas.Tak
                  ingDaijiahuculvertgatecollapseinJiangtangLakefloodzoneoftheHuaiheRiverasanexample,thisstudyre
                  tracestheprocessofculvertgatefailureandthesolutionofthedangeroussituation.Theunderwatermechanicsanal
                  ysisofthethrownpluggingmaterialiscarriedout.Itisestimatedthatthereasonforthepoorpluggingeffectisthat
                  thedifferencebetweenthewaterheadinsideandoutsidethedikeistoolarge ,andthewaterimpulseforceonthe
                  pluggedgabionsistoostrongthatitcannotbestabilized.Throughtheanalysisofthestabilityconditionsofthestop
                  page ,itisconcludedthatthecriticalstableflowrateofthestoppageis2.76m?s,thecriticalstableheaddiffer
                  enceis3.01m ,andthelowcoarsegabionhasstrongerstability.Thispaperalsoanalyzesanddiscussesthecon
                  structionoflargewatermaintenancebasinandthestrategiesofemergencypluggingofculvertgate.Theresearchre
                  sultsofthispapercanprovidereferenceforthefuturerescueofculvertgate.Theresearchresultsofthispapercan
                  provideareferencemethodfortherationalformulationofemergencyplanofsluiceinthefuture.
                  Keywords:embankmentsluice;gatefailure;emergencyplugging;stabilityanalysis;Daijiahuculvertlock

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