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                              Estimationofbreachparametersandlongevityoflandslidedam

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                                            1
                                FENGZhenyu,YANGXingguo,ZHOUJiawen,LIAOHaimei
                                  (1.CollegeofCivilEngineering,GuizhouUniversity,Guiyang 550025,China)
                     ( 2.StateKeyLaboratoryofHydraulicsandMountainRiverEngineering,SichuanUniversity,Chengdu 610065,China)
                  Abstract:Thesignificantfloodsformedbythebreakingoflandslidedamsseriouslythreatenpeople’slives,social
                  stability ,andecologicalenvironmentintheaffectedareasdownstream.Itisanurgentneedtoimprovetheaccuracy
                  oflandslidedamfailureparametersandlongevitypredictionforemergencytreatment.Basedonthegeographicaland
                  statisticalanalysisofthe1957groupoflandslidedam casesaroundtheworld,themaininfluencingfactorsofthe
                  breachparametersweredetermined.Thepredictionmodelsofpeakoutflow,breachsize,andbreachingduration
                  wereestablishedbynonlinearregressionmethod,whichallhaveahighdegreeoffitting.Thefactors’sensitivityto
                  breachparameterswasanalyzedquantitatively ,andtheresultindicatesthatthedam heightisthemostessential
                  factorfordam break.Furthermore, variousindependentvariablesand algorithmsareused toestablish the
                  predictionmodelsofthedurationofinfilling,overflowing,andbreachingstages,respectively.Finally,thecorre
                  spondingfusionmodelswereproposedbyusingtheweightedfusionmethod.Theresultscanprovideareferencefor
                  quantitativeevaluationoftheparametersofthedamfailureprocessandlongevityprediction.
                  Keywords:landslidedam;breachparameter;longevityanalysis;predictionmodel

                                                                                    (责任编辑:耿庆斋)

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