泰安矿极近距离煤层合理煤柱宽度确定

Reasonable Coal Pillar Width Determination of Extremely Close Distance Coal Seams in Tai'an Coal Mine

基于护巷煤柱稳定性分析和煤体内弹塑性分区,采用弹塑性理论和数值模拟等相关手段,研究了泰安矿极近距离煤层开采条件下,11号煤层区段煤柱留设的合理宽度。研究发现:为了保证煤柱稳定及巷道变形可控,同时最大程度减小煤炭损失,11#煤煤柱宽度不应小于10 m.

Based on the stability analysis of protection roadway coal pillar and elastic- plastic partitions in coal,using elastic- plastic theory and numerical simulation method,studies on the reasonable unexploited coal pillars of No. 11 coal seam under the condition of extremely close distance coal seam mining in Taian coal mine. The research fiding that in order to guarantee the stability of coal pillar and control roadway deformation,minimizes the coal loss at the same time,No. 11 coal pillar width should not be less than 10 m.