东明露天矿含软弱层端帮边坡稳定性控制方案优化

    Optimization of control plan for stability of end slope with weak layer in Dongming Open-pit Coal Mine

    • 摘要: 针对断层、降水及弱层等因素诱发露天矿端帮边坡变形失稳的问题,以呼伦贝尔东明露天矿北帮边坡为工程实践背景,采用数值模拟理论和极限平衡分析相结合的方法研究存在于北帮的弱层对边坡岩土体变形位移规律的影响,同时结合极限平衡分析方法对北帮边坡稳定性的控制提出了2种方案,即削坡减载和削坡减载+压脚;通过分析研究,并基于Geo-slope的计算结果和工程地质条件,最终采取削坡减载+压脚方案,为实际开采过程的安全高效生产提供了参考。

       

      Abstract: Aiming at the problems of faults, precipitation, weak layers and other factors inducing the deformation and instability of the end slope of the open-pit mine, taking the north slope of Dongming Open-pit Mine as the engineering practice background, the method of combining numerical simulation theory and limit equilibrium analysis is used. The influence of the weak layer of the north side slope on the deformation and displacement law of the slope rock and soil, and at the same time, combined with the limit equilibrium analysis method to control the stability of the north side slope, two schemes are proposed, namely, slope cutting and load reduction + pressure reduction. Through analysis and research, and based on the calculation results of Geo-slope and engineering geological conditions, the plan of slope cutting and load reduction + presser foot is finally adopted, which provides a reference for safe and efficient production during actual mining.

       

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