极近距离煤层采空区下递进开采矿压显现规律研究

基于天安煤业股份有限公司四矿己15、己16-17极近距离煤层群的地质条件和己16-23090工作面与上覆己15-23110采空区、相邻己16-23070采空区、己15-23130生产工作面的空间关系,采用理论分析和数值模拟的方法,系统研究了已开采工作面和正在开采工作面的对下伏近距离煤层的采动应力分布及传递规律,从而明确了矿压显现规律,得出了将己16-23090运输巷的位置布置在距己15-23130回风巷35 m较为合理,为实现“一巷多用”提供了依据。

Study on law of strata behaviors of progressive mining under goaf of extremely close distance coal seam

Based on Tian′an Coal Industry Co.，Ltd. No.4 Coal Mine Ⅵ₁₅，Ⅵ_16-17 geological conditions and geology of extremely close distance coal seam group Ⅵ₁₆-23090 working face and overlying Ⅵ₁₅-23110 empty area，Ⅵ₁₆-23070 mined-out area，Ⅵ₁₅-23130 spatial relationship of production working face，using theoretical analysis and numerical simulation method，the distribution and transfer law of mining stress of mining face and mining face to underlying short distance coal seam were studied systematically，so as to clarify the law of mine pressure appearance.It was concluded that it was more reasonable to arrange location of transportation roadway of Ⅵ₁₆-23090 at a distance of 35 m from the return air lane of Ⅵ₁₅-23130，which provided a basis for realization of "one roadway for multiple purposes".