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1、LandslidesandEngineeredSlopes:ProtectingSocietythroughImprovedUnderstanding–Eberhardtetal.(eds)©2012Taylor&FrancisGroup,London,ISBN978-0-415-62123-6Simulationoflandslidefluidizedmovementconsideringfluid-solidcouplingeffectY.HuangKeyLaboratoryofGeotec
2、hnicalandUndergroundEngineeringoftheMinistryofEducation,TongjiUniversity,Shanghai,ChinaZ.L.Dai&W.J.ZhangDepartmentofGeotechnicalEngineering,TongjiUniversity,Shanghai,ChinaABSTRACT:Groundwateraffectsstrengthanddeformationcharacteristicsofslope.Asaresu
3、lt,soilandwaterinteractionshouldbetakenintoaccountintheanalysisoflandslidehazards.Inthispaper,weadopteddifferentconstitutivemodelsforsolidandliquidtoconsiderfluid-solidcouplingeffectonthebasisofSmoothedParticleHydrodynamics(SPH):elasticmodelwasusedto
4、describethesolidphasewhileequationofstatefortheliquidphase.Then,amodelforlandslideconsideringthefluid-solidcouplingeffectwasestablished.FinallythemodelwasappliedtosimulatethefluidizedmovementofTangjiashanlandslide,andanalysesitsrun-out,whichwillultim
5、atelyplayanindispensableroleinthepreventionandassessmentoflandslidehazards.1INTRODUCTION(Hammourietal.,2008)andstrengthreductionmethod(HuangandJia2009).However,theycanAsoneofthemostcommonnaturaldisasters,neithersimulatethemotionoftheflowfrontnorlands
6、lidesyearlycausedamagestopeople’sprop-estimatetherun-outofthelandslidewhichplayertiesandlives,especiallytheflow-likelandslidesimportantrolesintheriskassessmentandpreven-whichoftenresultincatastrophicevents(Pastortion.Todealwiththisproblem,severalnewm
7、odelsetal.,2008).IntheWenchuanearthquakeoccurredhavebeenpresented.Adynamicanalysis(DAN)on12May2008inSichuanProvince,China,moremodelwasdevelopedtosimulatethecharacteris-than15,000flow-likelandslidesweretriggeredticsofrapidlandslide(Hungr1995).Constrai
8、nedaccordingtothesurveyresultsofseismicdam-interpolatedprofile(CIP)methodwasutilizedforage.Theseflow-likelandslideshavehigherflowpredictionoflargedeformationsassociatedwithvelocityandlongerrun-outdistance,thuscausingageomaterialflow(Sawadaetal.,2004)
