近距离煤层首采层确定方法分析
胡坚强
（山西焦煤汾西矿业两渡煤业，山西灵石031302）
摘要： 运用数值模拟手段，结合矿井具体资料对近距离煤层群回采时不同首采层情况下的覆岩卸压状况展开模拟分
析。借由对覆岩应力及煤层膨胀变形率变化的对比分析，明确将1#煤层作为首采层既可以保证底板稳定性又可确保2#煤层
与3#煤层充分卸压，是该近距离煤层群开采的最优选择，希望能够为实际生产提供一定指导与借鉴。
关键词： 近距离煤层群；首采层；数值模拟；规律分析
中图分类号： TD263.1 文献标识码： A 文章编号： 2095-0802-(2016)03-0081-02
Analysis of First Layer Determination Methods in Close Distance Coal Seams
HU Jianqiang
(Liangdu Coal Industry, Fenxi Coal Mining Group, Shanxi Coking Coal Group, Lingshi 031302, Shanxi, China)
Abstract: By means of numerical simulation, simulation analysis of overlying strata unloading conditions was made in the mining
process of closed distance seam group under the condition of different first layers combined with the data mine. By the contrastive
analysis of overburden stress and coal bed expansion deformation rate change, it proved that taking 1# coal seam as first layer can
guarantee the floor stability and also ensure the sufficient pressure relief of 2# and 3# coal seam, and was optimal mining selection
of closed distance coal seam group with the hope to be able to provide certain guidance and reference for practical production. Key words: close coal seam group; first layer; numerical simulation; regular analysis