关键词: 深部, 高应力, 双巷布置工作面, 煤柱宽度

Abstract: Deep high stress in order to determine the reasonable layout of working face double lane lane between the coal pillar width, and increase the stability of coal pillar and resource recovery, this paper takes the garden ditch coal mine 1022101 working face as the engineering background, the field investigation and theoretical analysis, numerical simulation methods, grasp the roadway section stress distribution of coal pillar, determine the deep high stress section lateral abutment pressure distribution of coal pillar, and USES the FLAC3D numerical simulation of the multiple mining face under the influence of different width (7 m, 10 m, 13 m, 16 m, 19 m, 22 m, 25 m) stress field distribution of coal pillar, Combined with the analysis of surrounding rock failure of 15m and 25m coal pillars in the field test roadway, the reasonable width of coal pillars between roadway under the condition of high stress in the deep is finally determined. The study shows that when the width of coal pillar is 16~25m, the stress concentration under multiple mining influences the coal pillar, which is easy to cause rock burst. When the width was 7~10m, the coal pillar was completely crushed and the roadway was seriously deformed and destroyed. Considering resource recovery, roadway surrounding rock stability and dynamic disaster prevention, it is reasonable to determine that the width of coal pillars between high-stress roadway in deep part of Yuanzigou coal mine is 13m~15m.