深凹露天矿边坡稳定性模拟分析

Simulation and analysis of slope stability in deep open pit

以马角石铜矿为工程背景,针对露天采场存在边坡失稳导致滑坡问题,采用极限平衡法对采场边坡进行二维边坡稳定性模拟分析,得出了露天采区各边坡稳定性安全系数,找到了可能发生滑坡破坏的危险滑移面边坡,并用FLAC3D软件进行边坡稳定性模拟验证。分析比较可知:二维、三维模拟结果基本一致,模拟分析得出露天采场边坡稳定性安全系数是可靠的;边坡整体稳定性较好,西侧边坡局部台阶和平台有发生垮塌的隐患,需要加强监测,并提出确保矿山边坡稳定性的建议,对于类似矿山边坡稳定性分析及现场施工具有参考意义。

with Majiaoshi Copper Mine as project background, simulation and analysis of the stability of open pit slope in two dimensions were made by the limit equilibrium method to address landslide caused by slope instability in the open pit. The safety coefficient of the slope stability in the open pit was obtained and the dangerous slip surface slope, which may lead to landslide was found. The slope stability was simulated and validated using FLACaD software. The analysis showed that the results of two- dimension and three-dimension simulation are consistent and the resultant safety coefficients for stability of slope in the open pit are reliable. The overall slope stability is desirable. The local bench and platform at the west slope have the hidden peril of collapse and need to be monitored frequently. Suggestions for ensu- ring the mine slope stability were put forward , which could be provided as reference for analysis of the slope stability and site construction of the similar mines.