露天采坑三维边坡稳定性分析及防治对策

基于现场调研和工程地质勘察成果, 分析了仓上露天采坑边坡变形破坏的特征。针对FLAC^3D面向复杂地形与岩体结构前处理建模存在的技术困难, 提出了MIDAS/GTS-FLAC^3D耦合建模新方法, 应用该耦合建模方法构建了露天采坑工程地质模型和三维计算模型, 通过对该露天采坑边坡变形破坏过程进行数值模拟分析, 揭示了环状采坑三维边坡变形破坏机制, 预测了边坡变形的关键部位, 在对该环状边坡稳定性进行评价分析的基础上, 提出了工程防治对策。

Three-dimensional Slope Stability Analysis and Countermeasures for Open-Pit

Based on the in-situ investigation and engineering geological exploration, deformation and failure characteristics of Cangshang open-pit slop were analyzed. A new MIDAS/GTS-FLAC^3D coupling method is put forward aiming at the technical difficulties and deficiencies in pre-processing for complex geologic body and structural engineering with FLAC^3D. The engineering-geological and three-dimensional compute models were built. After numerical simulation analysis for the deformation and failure process of the open pit, the deformation and failure mechanism of Cangshang open-pit slope of a circular shape was obtained, which can be used to forecast the critical parts in the deformation and failure of open-pit. Based on the stability evaluation and analysis for such circular open-pit, some engineering countermeasures have been proposed.