别斯库都克露天煤矿边坡破坏特征与稳定性分析

Analysis on failure characteristics and stability of slope in Biesikuduke Open-pit Mine

针对别斯库都克露天煤矿西帮和南帮设计的倾斜边坡破坏问题,开展了顺倾边坡破坏机理研究,分析矿区可能存在的破坏特征,通过数值模拟和稳定性数值计算,确定了矿区变形特征和边坡稳定性。结果表明:西帮区域滑坡特征为沿煤层底板弱层与火烧岩内部滑动,南帮区域滑坡特征为顺倾边坡溃屈破坏或沿着结构面发生失稳;同时,两区域边坡稳定性均不满足安全储备1.10的要求;从而建议西帮火烧煤区域沿露头煤开采,南帮区域破底帮开采。

In view of the inclined slope failure of west slope and south slope in Biesikuduke Open-pit Mine,the mine carries out the failure mechanism of inclined slope and analyzes the possible damage characteristics of the mining area.The article determines deformation characteristics and slope stability of the mining area by numerical simulation and numerical calculation.The results show that the landslide in the west slope area is characterized by sliding along the weak layer of the coal seam floor and the interior of the igneous rock,and the landslide in the south slope area is characterized by the collapse of slope or instability along the structural surface.At the same time,the slope stability of the two regions does not meet the requirements of1.10safety reserves.The author suggests that the coal burning area in the west slope should be mined along the outcrop coal and the south slope area will be broken down.