综放工作面留设煤柱合理宽度的确定

Determination of Reasonable Width of Coal Pillar in Fully Mechanized Caving Face

综放工作面煤柱留设宽度过大,会造成资源损失。综放工作面煤柱留巷及围岩控制技术的应用,缓解了这一突出矛盾,既提高了巷道的维护力也发挥了重要作用。本文依据薛虎沟矿21015工作面的实际情况,使用FLAC3D软件进行数值模拟。实践证明,巷道煤柱宽度20m时,可以保障窄煤柱沿空巷道围岩稳定,对同类工程具有参考价值。

Too large coal pillar width in fully mechanized top coal caving face will result in resource loss. The application of coal pillar retaining roadway and surrounding rock control technology in the fully mechanized top coal caving face alleviates this outstanding contradiction, which not only improves the maintenance force of roadway, but also plays an important role. According to the actual situation of 21015 working face of Xuehugou Mine, this paper uses FLAC^3D software to do numerical simulation. Practice has proved that, when the coal pillar width of the roadway is at 20 m, the stability of the surrounding rock of the roadway with narrow coal pillar can be ensured, which is of reference value to similar projects.