青铜沟尾矿边坡稳定性分析

Stability Analysis of the Tailings Slope in Qingtonggou Coal Mine

结合青铜沟尾矿库治理工程,采用数值模拟方法分析了尾矿库边坡稳定性情况,计算结果表明:采用“放坡+挡墙”的治理措施,可以保证尾矿库在设计水位、洪水位等工况下保持较高的安全系数;尾矿库植被恢复后,对边坡稳定性的影响主要集中在:根系固定松散矿渣;枝叶防止雨水直接冲刷;根系提高岩土体抗剪强度参数;植被根系对岩土体的崩解。总的来说,植被恢复后有利于促进边坡的稳定。

Combining with the treatment project of the tailing pond,the numerical simulation method is used to analyze the slope stability of tailing pond.The calculation results show that the control measures of"grading+retaining wall"can ensure the tailings pond to maintain a high safety factor under the working conditions of design water level and flood level;after the vegetation restoration of tailings pond,the impact on slope stability mainly includes:The root system fixed loose slag;branches and leaves to prevent direct rain erosion;root system to improve the shear strength parameters of rock and soil;vegetation root system disintegration of rock and soil.Generally speaking,vegetation restoration is conducive to the stability of the slope.