窄煤柱沿空掘巷合理煤柱宽度的确定

The Determination of the Reasonable Width of Narrow Coal Pillar Along Gob-side Roadway

本文针对忻州窑矿15102工作面生产地质条件,通过理论分析以及数值计算,分析了工作面采用窄煤柱留巷时,上覆岩层结构及活动情况对窄煤柱稳定性的影响。通过研究不同煤柱宽度情况下,窄煤柱的应力环境及煤柱内位移变化规律,最终确定窄煤柱合理宽度为8m。

In this article, the production geological conditions of the 15102 working face of Xinzhouyao Mine is first analyzed, then through the theoretical analysis and numerical calculation, the influence of overlying strata structure and activity of narrow coal pillar on stability is analyzed, when the working face used narrow coal pillar to retain roadway. By studying the difference of coal pillar width, the stress environment of narrow coal column and the change rule of displacement in coal pillar are determined, and the reasonable width of narrow pillar is 8 m.