近距离煤层下组煤首采工作面覆岩运移规律研究
魏小红
（霍州煤电辛置煤矿，山西霍州031412）
摘要： 以三交河矿为工程实例背景，研究其近距离下煤组首采工作面上覆岩层运移规律，通过理论分析和FLAC数值
模拟，分析了该工作面不同推进距离对应的上覆岩层运移规律，为该工作面及两侧巷道的支架选型提供了可靠参考，该
规律可广泛应用于以后同种煤层地质条件下的矿区下组煤层安全高效回采提供重要参考意义。
关键词： 近距离煤层；首采工作面；覆岩运动特征；数值模拟
中图分类号： TD823 文献标识码： A 文章编号： 2095-0802-(2016)12-0036-02
Study on Migration Rule of Overlying Strata at the First Mining Face of Lower Group Coal in
Close Coal Seam
WEI Xiaohong
(Xinzhi Coal Mine, Huozhou Coal Electricity Group, Huozhou 031412, Shanxi, China)
Abstract: With Sanjiaohe Coal Mine as the practical engineering background, this paper studied the movement rules of upper overlying
strata at the first mining face of close lower coal group. Through the theoretical analysis and the FLAC numerical simulation,
this paper analyzed the corresponding movement rules of upper overlying strata of different advanced distances at the working face,
providing reliable references for the type selection of support for the working face and both sides of the roadway. The rules could be
widely used which provided the important reference for safe and efficient extraction of lower group coal in the mining area under the
same geological conditions. Key words: close coal seam; first mining face; movement characteristics of overlying strata; numerical simulation