关键词: 厚煤层, 综放工作面, 区段煤柱, 煤柱稳定性, 主应力差

Abstract: In order to solve the double lane arrangement working face this section pillar of low recovery rate of coal resources, resource waste serious problems, 3304 face now stay in mulberry ping No.2 shaft section pillar as engineering background, the theoretical analysis and numerical simulation method of combining the analysis of the working face of lateral abutment pressure distribution law, the study compared the 6m, 8m, 10m and 12m, 15m, 20m, 25m and 30m different width coal pillars principal stress and displacement distribution, comprehensive consideration to ensure mine safety production and improve the recovery rate of coal resources finalized by the dual factors of reasonable section width of coal pillar for 10 m. The test results show that during the stoping of the working face, the maximum displacement of the roof surface is 21mm and the maximum displacement of the two sides is 15mm, which meets the requirements of mine safety production and proves that the width of the coal pillar is reasonable. The research results are of certain reference value to the determination of coal pillar width between roadway in the continuation working face of No. 2 well and similar mining conditions.