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为确保仓上露天采坑在尾矿堆填过程中的安全稳定,基于现场调研和工程地质勘察成果,分析了露天采坑边坡变形破坏的特征。应用MIDAS/GTS-FLAC3D耦合建模新方法,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。最后,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。
In order to ensure the safety and stability of open pit excavation in the process of landfill tailings filling, the characteristics of deformation and failure of open pit mining slope are analyzed based on the field investigation and engineering geological survey results. Based on the MIDAS / GTS-FLAC3D coupling modeling method, the open pit excavation engineering geological model and three-dimensional calculation model are established. By numerical simulation analysis of the deformation and failure process of the open pit mining slope, the three-dimensional slope Deformation and failure mechanism to predict the key parts of slope deformation. Finally, based on the evaluation and analysis of the stability of the annular slope, the engineering prevention and control measures are put forward.