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

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.