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1、成都理工大学硕士学位论文overalldeformationoftheslope,formationandevolutionoftension-causedcracksatbackedgeoftheaccumulationoflandslidearea,formationprocessoflocalpreservationbetterrockblocks,fullevolutionofthedisintegrationrockblocks,formationprocessofriftbasinatmiddleedgeofthea
2、ccumulationoflandslideareaanddeformationprocessoflandslide-affectedzonearea.Theresultsshowthat:①,thedeformationandfailuremechanismofLuobogangSlopecanbesummedupas“multi-layersliding-crack”;②,astherearemulti-layerweakintercalationsintheslope,andthelayersarefluctuations
3、,itmakesslidingsurfaceoftherockblocksundulate.Deformationconditions(especiallyslidingsurfaceconditions)oftherockblocksaresodifferentfromonebyonethatitmakesdeformationrateoftherockblocksdifferent.Duringthedeformationprocess,thedeformationconditionsoftherockblockswillb
4、echanged,whichwillinturnchangethedeformationrateoftherockblocks.Therelationshipbetweendeformationconditionsanddeformationrateisthemechanismforthedisintegrationoftherockblocks,localpreservationbetterrockblocksafterdeformation,riftbasin,tension-causedcracksatbackedgeof
5、theaccumulationoflandslideareaandsoon;③,whenthedeformationconditionschanges,thedeformationoflocalpreservationbetterrockblocksafterdeformationisstillpossible.(2)ThispaperuseslimitingequilibriummethodandFLAC3Dnumericalcalculationmethodtomakeanassessmentoftheslopestabil
6、ityinnature,nature+storm,nature+earthquakeandnature+storm+earthquakeconditions.Theresultsshowthat:①,stabilityoftheoverallslopeisgoodinnaturalstate;②,innature+stormandnature+earthquakeconditions,theslopecanalsomaintainthebasicstability,however,safetyreserveislow,itisd
7、ifficulttoreachtherequestofengineeringconstruction;③,innature+storm+earthquakestate,large-scaleareaoftheslopewillfail;④,Itisworthnotingthattheexcavationprocessduringconstruction,especiallythepartialexcavationinducingtoexposeweakintercalation(includingslidingzone)atth
8、eslopeheel,willreducethelocalstability;⑤,waterisanotherimportantfactorfortheslopestability.(3)Accordingtothepreventionandtreatmentp
