云南某露天矿山边坡稳定性影响因素敏感性分析

边坡稳定性对于露天矿山工程十分重要。为深入研究云南某矿山边坡稳定性影响因素敏感性，根据现场勘探、岩石力学室内试验等工作准确地确定出了对该矿山边坡稳定性影响最大的四个因素，然后通过正交试验设计试验组，而后基于强度折减法计算边坡安全系数，最终先后运用极差分析法以及方差分析法对实验结果进行了对比分析以及验证，充分保证了分析的全面性和准确性。最终结果表明：四种因素均对该矿山边坡具有显著影响，该矿山边坡稳定性影响因素敏感性由大到小的排序为黏聚力＞水平地震加速度＞内摩擦角＞最终边坡角；极差分析与方差分析所得敏感性大小顺序一致，可做相互校核；本研究可为相似露天矿山边坡设计、加固工作提供一定的参考依据。

Sensitivity analysis of influencing factors of slope stability in an open-pit mine

Slope stability is very important for open-pit mine engineering. In order to further study the sensitivity of the influencing factors of slope stability in a mine in Yunnan, this paper accurately determines the four factors that have the greatest impact on the slope stability of the mine according to the field exploration and rock mechanics laboratory tests. Then, the test group is designed by an orthogonal test, and then the slope safety factor is calculated based on the strength reduction method. Finally, the range analysis method and variance analysis method are used to compare and verify the experimental results, which fully guarantees the comprehensiveness and accuracy of the analysis. The final results show that the four factors have a significant impact on the slope of the mine. The sensitivity of the influencing factors of the slope stability of the mine from large to small is cohesion > horizontal seismic acceleration > internal friction angle > final slope angle; the order of sensitivity obtained by range analysis and variance analysis is consistent, which can be checked mutually. This study can provide some reference for the design and reinforcement of similar open-pit mine slopes.