综采面小煤柱留巷支护设计与实践

Design and practice of retaining roadway support for small coal pillars in fully mechanized mining face

针对小峪煤业19#煤层南Ⅰ辅助盘区8102工作面留设的大宽度护巷煤柱,浪费煤炭资源问题。本文结合现场地质条件,通过数值模拟的方法研究不同的沿空掘巷煤柱尺寸方案下的岩层移动特征,并进行合理的巷道支护设计。结果表明:5102巷巷留设5m的煤柱沿空掘巷,现场观测表明支护设计能够满足巷道安全生产的要求。

For the large-width roadway coal pillars left in the 8102 working face of the South I auxiliary section of the No.19 coal seam of Xiaoyan Coal Industry,the problem of coal resources was wasted.Based on the geological conditions of the site,this paper studies the movement characteristics of rock formation under different coal pillar size schemes along the goaf by numerical simulation method,and carries out reasonable roadway support design.The results show that 5D coal pillars are left along the roadway in the 5102 laneway.The field observation shows that the support design can meet the requirements of safe production of roadway.