基于不同二维极限平衡法的边坡稳定性研究

边坡稳定性是露天矿开采安全评价的重要影响因素，基于不同二维极限平衡法，对露天矿边坡工程地质条件进行分区，初步确定采掘场工作帮、端帮的坡角、地表境界，为矿山边坡稳定性研究提供地质依据。通过对不同的边坡滑移破坏模式进行了分析，采用STAB2009分析验算边坡稳定性，简化Bishop法计算，整体单形法优化。结果表明，非工作帮、西端帮可能的破坏模式为顺层滑移破坏模式，东端帮、工作帮可能的滑移破坏模式为圆弧滑移破坏模式,推荐了各边坡的最终帮坡角。勘察边坡稳定性揭示了露天矿开采过程中帮坡破坏模式规律。

Study on slope stability based on different two-dimensional limit equilibrium methods

Slope stability is an important factor affecting the safety evaluation of open-pit mining.Based on the "different two-dimensional limit equilibrium method"，the engineering geological conditions of open-pit slope are divided，and the slope angle and surface boundary of working slope and end slope in the mining area were preliminarily determined，so as to provide geological basis for the study of mine slope stability.Different slope slip failure modes were analyzed.STAB2009 as used to analyze and check the slope stability，simplify the calculation of Bishop method，and optimized the overall simplex method.The results showed that the possible failure mode of the north and west slope was bedding sliding failure mode，and the possible failure mode of the east and south slope was circular arc sliding failure mode.The final slope angle of each slope was recommended.The investigation of slope stability revealed the failure mode and law of slope in the process of open-pit mining.