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通过分析余吾煤业原有的工作面巷道布置方式存在的不足,提出采用留窄煤柱沿空掘巷技术进行优化,从而提高采煤率,并使得巷道处于采空区侧向低应力区,显著改善了巷道维护状况。结合余吾煤业S1202工作面生产地质条件,采用理论分析与数值模拟的方法分析不同窄煤柱宽度下围岩变形情况,从而最终确定合理的窄煤柱宽度及巷道支护技术。
By analyzing the existing problems of the existing roadway layout in YuWu coal industry, it is proposed to adopt the technology of roadway driving along narrowing coal pillars to optimize coal mining, so as to improve the coal mining rate and make the roadway in the sideways low stress area of the goaf, Significantly improved roadway maintenance. Combined with the production geological conditions of S1202 working face of YuWu coal industry, the deformation of surrounding rock with different widths of narrow coal pillars is analyzed by theoretical analysis and numerical simulation, so as to finally determine the reasonable narrow coal pillar width and roadway support technology.