四台矿综采工作面煤柱宽度优化研究

Study on Optimization of Coal Pillar Width in Fully Mechanized Mining Face of Sitai Mine

针对四台矿80315工作面留设煤柱宽度大导致的煤炭资源浪费问题,采用公式计算法以及煤柱应力分布分析法,确定煤柱合理宽度为17.62~23.34 m。矿压监测以及钻孔煤柱结构观察分析结果显示,优化煤柱宽度后巷道围岩和煤柱均能保证稳定。

Aiming at the waste of coal resources caused by the large width of the reserved coal pillar in the 80315 working face of Sitai Mine,the formula calculation method and the analysis method of the stress distribution of the coal pillar are adopted to determine the reasonable width of the coal pillar as 17.62-23.34 m.The results of the mine pressure monitoring and the observation and analysis of the drill hole coal pillar structure show that the roadway surrounding rock and the coal pillar can ensure stability after optimizing the width of the coal pillar.