平朔东露天矿陡帮开采边坡稳定性控制方案

Slope Stability Control Scheme for Steep Slope Mining in Pingshuo East Open-Pit Coal Mine

以平朔矿区东露天矿南帮回收4~#煤及其下部压滞资源边坡变形失稳控制工程为例,基于数值模拟分析和极限平衡分析相结合的方法,分析了采用陡帮开采方式回收边帮压煤的可行性。研究结果表明,在保证边坡稳定的前提下,东露天矿南帮边坡角可在原设计基础上进一步增大1°,可多回收压滞煤炭资源约0.78 Mt。

Taking the slope deformation and instability control project of the 4~# coal and its lower stagnation resource recovery in the south side of the east open-pit mine in Pingshuo Mining Area as an example, the feasibility of using steep slope mining to recover side-pressure coal is analyzed based on the combination of numerical simulation analysis and limit equilibrium analysis.The results of research and practice show that, on the premise of ensuring the stability of the slope, the slope angle of the south side of the east open-pit mine can be further increased by 1 degree on the basis of the original design, and the compressed coal resources can be recovered by about 0.78 Mt.