沿空掘巷窄煤柱合理宽度研究

Study on the Reasonable Width of Narrow Coal Pillar along the Roadway

为了减少干河煤矿区段煤柱的宽度,通过理论分析和FLAC3D软件建立2-1052巷留窄煤柱沿空掘巷数值模型,确定2-1052巷沿空掘巷所留设窄煤柱的宽度为6m。现场窄煤柱护巷掘进后,巷道两帮的深部位移量控制在有效范围内,可以保证巷道的安全掘进及正常回采。

In order to reduce the width of coal pillars in Ganhe Coal Mine,a numerical model of 2-1052 roadway driving along goaf with narrow coal pillars was established by theoretical analysis and FLAC3D software,and the width of the narrow coal pillars in 2-1052 roadway driving along goaf was determined to be 6m.After the narrow coal pillar driving,the deep displacement of the two sides of the roadway is controlled within the effective range,which can ensure the safe driving and normal mining of the roadway.