基于Geo-Slope数值模拟的某石灰石矿边坡稳定性分析

Stability Analysis of a Limestone Mine Slope Based on Geo-Slope Numerical Simulation

随着露天矿山边坡安全滑坡事件频发,矿山企业对边坡安全越发重视。以某石灰石矿超过100 m的边坡为研究对象,通过分析该矿区的工程地质、水文地质条件,从中选择3个典型剖面,通过赤平投影方式分析其破坏模式,结合室内试验和数值分析的方法进行渗流场分析和安全系数算。结果表明,3个典型剖面最小安全系数均满足规范要求,均达到稳定状态。随着矿山开采深度的延伸,边坡高度越来越高,需要加强对边坡监测及安全管理工作。

With the frequent occurrence of slope safety landslides in open-pit mines,mining enter⁃prises pay more and more attention to slope safety.The slope over 100 m of a limestone mine is taken as the research object,and three typical profiles are selected by analyzing the engineering geology,hydrogeologi⁃cal conditions of the mine area.The failure mode is analyzed by erector projection,and the seepage field and safety factor of three typical profiles are analyzed by laboratory test and numerical analysis.The results show that the minimum safety factors of the three typical profiles meet the requirements of the code and all reach the stable state.With the extension of mining depth,the slope height becomes higher and higher,so it is necessary to strengthen the monitoring and safety management of the slope.