论文部分内容阅读
针对综放开采工作面区段煤柱尺寸优化问题,以某矿19106工作面为工程背景,利用FLAC~(3D)数值分析软件对采空区侧向支承压力分布和塑性区破坏范围进行模拟分析。结果表明:塑性区分布形成了一定范围的拉剪破坏区域,巷道的布置要尽可能避开该区域。考虑到受双侧采动影响,煤柱内存在较大的弹性区(5 m),弹性区的存在使得煤柱的承载能力提高,区段煤柱最终确定为20 m。
In order to solve the problem of coal pillar size optimization in the fully mechanized caving face, taking the 19106 working face of a mine as the engineering background, the lateral support pressure distribution and the damage range of the plastic zone were simulated by using FLAC 3D numerical analysis software . The results show that the distribution of plastic zone forms a range of tensile shear failure area, and the layout of roadway should be avoided as far as possible. Considering the influence of bilateral mining, there is a large elastic zone (5 m) in the coal pillar. The presence of the elastic zone enhances the bearing capacity of the coal pillar, and the coal pillar in the section is finally determined to be 20 m.