大采高工作面合理煤柱尺寸研究

Study on reasonable size coal pillar in large mining height working face

煤柱的留设对矿井工作面的安全高效开采起着至关重要的作用,其留设的尺寸则是影响煤矿巷道维护与原煤采出成本的一个重要因素。针对山西某矿影响煤柱稳定性的因素,以该矿1306工作面区域作为实验场地,对其工作面合理煤柱尺寸进行理论分析和数值模拟研究,得出了其工作面合理净煤柱宽度不小于40 m。对大采高工作面的安全高效开采有一定的指导意义。

Coal pillar exerts great importance of safe and efficient mining in working face, the size is an important factor that affecting the cost of roadway maintenance and raw coal mining. Based on the stability factor of coal pillar in some mine of Shanxi province, 1306 working face of the mine was taken as the experiment site, the reasonable size of coal pillar was analyzed and conducted with numerical simulation, the reasonable net width of coal pillar of the working face was not less than 40 m, which had guidance significance for safe and efficient mining in large mining height working face.