别斯库都克露天煤矿南帮顺层边坡稳定性分析

Stability analysis of south slope bedding slope in Beskuduk Open-pit Coal Mine

基于露天矿工作帮顺层边坡稳定的重要性,结合别斯库都克露天煤矿的边坡地质条件,利用MidasGTSNX建立边坡模型并导入FLAC3D进行强度折减法计算,对边坡内部的位移场、应力场等进行分析,探究顺层岩质边坡在自重作用下的破坏模式以及发展趋势。结果表明:边坡软硬岩层交界面处发生了大范围的剪切破坏,在坡面处发现了潜在的滑移面但并未贯通,坡面发生了较大的水平位移为35 cm,边坡整体安全系数为1.176。

Based on the importance of bedding slope stability in open-pit mine,combined with the slope geological conditions of Beskuduk Open-pit Coal Mine,the article uses Midas GTSNX to establish a slope model and imported FLAC3D for strength reduction method calculation,and analyzes the displacement field and stress field inside the slope,and explores the failure mode and development trend of bedding rock slope under the action of self-weight.The results show that a large range of shear failure occurs at the interface of soft and hard rock layers of the slope,and a potential slip surface is found at the slope,but it is not penetrated,the slope surface has a large horizontal displacement of 35 cm,and the overall safety factor of the slope is 1.176.