柒树湾不稳定斜坡变形机制分析及稳定性评价-地质工程专业论文.docx

了分析评价。计算结果表明：①Ⅰ区不稳定斜坡在天然、暴雨以及地震工况下沿潜在主滑动面发生变形失稳的可能性较小，但潜在次级滑动面以上的岩土体在暴雨或地震工况下处于基本稳定或欠稳定状态，其安全储备较低，在持续暴雨条件下很可能产生局部失稳。②Ⅱ区不稳定斜坡在天然工况下为基本稳定，但在暴雨和地震状态下则处于欠稳定状态。③Ⅲ区不稳定斜坡在天然状态下稳定性较好，在暴雨和地震工况下处于欠稳定-不稳定状态，而在持续暴雨作用下很可能发生变形失稳。关键词：不稳定斜坡变形机制数值模拟稳定性评价DeformationMechanismAnalysisandStabilityEstimationofQishuwanUnstableSlopeIntroductionoftheauthor:Licanghai,male,wasborninOctober,1983,whosetutorwasAssociateProfessorDenghui.HegraduatedfromChengduUniversityofTechnologyinGeologicalEngineeringmajorandwasgrantedtheMasterDegreeinJune,2010.AbstractAftertheearthquakeof“5.12”happenedinWenchuan,thereareover1700shatteringmountainwhichisthesplitting,butnotslide,andloosing,butnotmove.Thosemakeanenormousharmtothepeople’slivesandpropertiessecuritywholivedindisasterareaofearthquake.MostoftheshatteringmountaindistributeincountyofQingchuanwhichisalsotheseveritydisasterarea.ThisarticleusetheshatteringmountainofQishuwanunstableslopeinQingchuancounty,Sichuanprovinceastheobjectofstudy,andfollowthebasictechniqueslineoffieldresearch,establishthemodelofconcept,mechanismofdeformationanddestroyandvalidatesimulations,evaluationofthestabilityandthesuggestofcontrolmeasures,basedonagreatdealofgeologicalsurveyofunstableslopeinfield,westudiedgeologicconditions,structuralfeaturesoftheslopebodyandtherockandsoilandthedeformationfeaturesoftheslopecomprehensively.Onthisbasis,analyzethemechanismofthedevelopmentofthegeologicalevolutionprocessoftheslope,particularlytheevidenceofdeformationandfailureappearedinthebodyofslopeaftertheearthquakeof“5.12”inWenchuan.Establishthemodelofconceptofmechanismofdeformationandfailure.AfterthatusedtheprogramofFLAC3Dmakeanumericalsimulationanalysistothemodelofconcept,verifiedthecorrectnessofthemodelofconceptandtheaccuracyoftheparametervalues.Onthebasisoflucubratethemechanismofdeformationandfailure,usinglimitequilibriummethodmakeanalysisandevaluationtothestabilityoftheplasmodiumindifferentpartsoftheslopeandindifferentworkingconditions,andcalculatetheslideforceoftheplasmodiumindifferentpartso