摘要
介绍了斜坡变形和稳定性分析的研究现状,利用FLAC3D软件对天然状态下、降雨状态下和地震状态下堆积体斜坡的变形、应力场环境和稳定性进行数值模拟研究,进一步采用强度折减法对降雨状态下堆积体斜坡的潜在破坏模式进行分析。根据模拟所得的计算结果,从斜坡的位移矢量图、应力场图和剪切应变增量和塑性区图分析,得出斜坡在3种状态下的变形特征和稳定性状态,确定斜坡的变形破坏模式为推移式。
A brief description is given to the currente status of the study on landslide deformability and stabilityfirstly and then, using FLAC3 D,deformation and stability of a talus landslide is studied by means of numerical simulation under natural situation,wetting situation and earthquake conditions. On the basis of calculation results obtained from simulation, by means of analysis of displacement vector,geostress vector and shear strain increment and plastic zone diagram, deformation features and stability under three situation are given. It is determined that the deformation and failure model of the talus landslide is thrust load caused landslide.
作者
李刚
李恩兴
LI Gang;LI En-xing(China Railway ErYuan Engineering Group Co.Ltd,Chengdu 610031,China;Chengdu City Appearance and Environmental Sanitation Supervision Service Center,Chengdu 610051,China)
出处
《地质灾害与环境保护》
2020年第3期66-71,76,共7页
Journal of Geological Hazards and Environment Preservation
关键词
FLAC3D
变形特征
稳定性
推移式斜坡
FLAC3D
deformation features
stability
thrust load caused landslide
