高瓦斯特厚煤层采动影响下巷道快速掘进研究

Research on roadway excavation rapidly in the coal mine with high gas and thick coal seam

运用概率积分法并通过现场观测裂隙带发育范围与测试瓦斯含量,确定高瓦斯特厚煤层高抽巷的位置,实现了高抽巷的快速掘进。在高抽巷内对圈定范围内预抽瓦斯,从而实现上下巷快速掘进。

Using the probability integration method and D-P criterion,the stress difference of a point in the overburden rock of mining face is calculated.The fracture scope of the overburden rock can be judged by the stress difference.By field observing the fracture zone and testing the gas content,the location of the high level roadway for drawing out gas can be determined and can achieve the rapid excavation of the high level roadway.By pre-drawing out gas in the high level roadway,the roadway excavation rapidly can be achieved.