论文部分内容阅读
针对某矿特厚泥岩顶板回采巷变形大、泥化现象严重的工程难题,通过对巷道变形破坏特征分析,确定了影响巷道破坏失稳的主控因素。基于耦合支护理论,在原支护方案的基础上,提出了单一锚索+锚喷+钢筋网+控底锚杆和多维多级锚索+锚喷+钢筋网+控底锚杆2种优化方案,采用FLAC~(3D)软件数值模拟了2种优化方案的支护效果。
Aiming at the engineering problems of large deformation and muddy phenomenon in the mining gateway of the special thick mudstone roof of a certain mine, the main controlling factors that affect the failure of the roadway destruction and instability are determined through the analysis of the characteristics of the deformation and destruction of the roadway. Based on the theory of coupled support, based on the original support scheme, two kinds of optimization methods are proposed: single anchor + anchor spray + steel mesh + bottom control anchor and multi-dimensional multi-level anchor + anchor spray + steel mesh + bottom control anchor Program, FLAC 3D software was used to simulate the supporting effects of two optimization schemes.