近距离煤层巷道布置数值模拟研究

Study on Numerical Simulation of Roadway Layout in Close Coal Seam

为合理布置近距离煤层下煤层巷道及确定工作面间的煤柱宽度,确保巷道生产期间安全,根据矿压规律计算得出:13~#号煤巷道应内错8~#煤柱至少19m布置。经数值模拟结果分析:13~#煤巷道内错于煤柱中心线25m,与计算结果基本一致,从煤柱核区宽度及两侧塑性区宽度角度考虑,13~#煤层合理区段煤柱宽度为25m。

In order to reasonably arrange the roadways under the close seam and determine the width of coal pillars between working faces to ensure the safety of roadways during production, according to the calculation of the law of rock pressure, it is concluded that the 13^# coal roadway should be arranged with 8^# coal pillars at least 19m at an internal fault. The numerical simulation results show that the center line of coal pillar is 25m in No. 13 coal roadway, which is basically consistent with the calculation results. Considering the width of coal pillar core and plastic zone on both sides, the reasonable width of coal pillar in No. 13 coal seam is 25m.