中文摘要：

由于近距离煤层开采较复杂的时空关系,造成其采场四周围岩产生复杂的应力场,影响附近巷道围岩的稳定。合理的停采线位置对近距离煤层巷道的稳定有重要的意义,根据金家庄煤矿3号煤层的地质条件,通过理论分析与数值模拟,分析3号煤层西部采区不同停采线位置对下部煤层下山的影响。确定了30 m合理停采线位置,不仅降低了下部煤层下山的围岩应力,还减小了巷道的变形量,提高了煤炭资源的回收率。

英文摘要：

Due to the complex time-space relationship of the close distance coal seam mining, the surrounding rock of the stop has a complex stress field, affecting the stability of roadway nearby. Reasonable stopping line has an important significance to the stability of the roadway in the close distance coal seam, according to the geological conditions of the Jinjiazhuang coal mine No. 3 coal seam, through theoretical analysis and numerical simulation, analysis of No. 3 coal seam west mining area different stopping line impacting the lower coal seam down-dip roadway. The 30 m reasonable stopping line was settled, not only reduced the stress around the down-dip roadway of the lower coal seam, but also reduced deformation of the roadway, improved the recovery rate of coal resources.