综放工作面煤巷煤柱合理宽度的确定

摘要

以晋城泽州天泰岳南煤业岳南矿32015 工作面为研究对象,采用数值模拟分析计算,对沿空掘巷煤柱合理尺寸的留设进行探讨, 研究不同煤柱尺寸的塑性破坏区范围和所承受的应力分布特征.结合矿井情况, 确定煤柱合理宽度为30m, 能够保证巷道围岩稳定.%With the 32015 working face of Yuenan Mine, Jincheng, Tiantai, taken as the research object, the numerical simulation analysis is carried out to discuss the reasonable size of coal pillars in gob-side entry, whose plastic failure zone and stress distribution characteristic are analyzed. According to the conditions of the mine, the reasonable width of coal pillar in Yuenan Mine is determined to be 30m, which can ensure the stability of the surrounding rock of the roadway.