贵阳市某牵引式顺层滑坡演化过程及渐近破坏机理数值分析  

Retrogressive and Bedding Landslide Evolution Process and Progressive Failure Mechanism Numerical Method Research of Guiyang

作　　者：郑克锐 余波[2] 杨朝发 陈筠[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵阳550003 [2]中国水电顾问集团贵阳勘测设计研究院,贵阳550081 [3]贵州有色地质工程勘察公司,贵阳550005

出　　处：《土工基础》2016年第1期59-63,共5页Soil Engineering and Foundation

基　　金：国家自然科学基金(51469007);贵州省科学技术基金资助(黔科合J字[2012]2168);贵州省科教青年英才培养工程项目资助(黔省专合(2012)150号)

摘　　要：以贵阳某公路一处路堑开挖顺层滑坡为例,通过地质调查、变形分析等方法,定性分析了滑坡变形破坏的影响因素和演化过程。基于FLAC^(3D)数值模拟平台,采用能考虑层面特性的遍布节理模型,定量计算了滑坡体的变形,分析了滑坡体在不利工况下的稳定状态,其与折线滑动法计算结果一致。基于该模型,重点对滑移面的由下自上渐近剪切过程进行了动态模拟和显示。This paper presents a daylighting rock slope failure simulation results.The progressive slope failure through excessive deformation and its evolution factors are evaluated through the geological investigation and deformation analysis by software FLAC3 D.The layered rock joint was incorporated in the deformation analysis of the numerical model.The stability evaluation was performed under the most unfavorable conditions.The numerical analysis results is similar to the limit equilibrium analysis by using segment line method.The process of the shear movement at the failure plane is also dynamically simulated.

关 键 词：顺层滑坡 渐进破坏 遍布节理模型 数值模拟 

分 类 号：P642[天文地球—工程地质学]