煤层群重复采动对坡体稳定影响的物理模拟研究

Physical simulation study on slope stability in repeated coal seams mining

为了研究山体下3层煤开采对坡体稳定的影响,采用理论分析与物理模拟方法,对煤层群开采引起坡体移动变形的程度进行了分析,结果表明:原设计方案中1#煤层开采对坡体稳定影响较小,2#煤层开采将导致坡体的移动变形急剧增大,在坡体中产生的开采裂缝易致坡体失稳,3#煤层开采则对坡体的移动变形影响较小;实验结果与理论计算结果基本一致。

In order to study the impact of 3-layers-of-coal mining under mountain on the slope stability,the paper uses theoretical analysis and physical simulation methods to analyze the degree of the slope displacement and deformation that are induced by coal seams mining.The results show that according to the original design,1# coal seam mining has smaller impact on the slope stability,but 2# coal mining will make the slope have sharp displacement and deformation,for the fracture resulted from the mining under the slope will cause the slope to lose stability,and then 3# coal mining also has less effect on the displacement and deformation of the slope.The experimental results are basically consistent with the theoretical calculation results.