高突松软煤层水力冲孔快速揭煤应用

发布时间：2019-06-07 18:57

【摘要】：为实现"高突"松软煤层石门揭煤快速成巷,结合新安煤矿16010工作面的实际情况以及高压水射流破煤理论,分析了破煤压力及流量并对水力冲孔设备加以选型。试验结果表明,水力冲孔时冲孔压力在8~10 MPa时,水力冲孔后钻孔直径扩大倍数在8~11倍,平均瓦斯抽采体积分数提高10倍左右,经过30 d的预抽,各项突出预测指标均低于临界值,实现了"高突"松软煤层快速石门揭煤成巷的安全作业。
[Abstract]:In order to realize the rapid opening of Shimen coal in "high outburst" soft coal seam, combined with the actual situation of 16010 working face in Xinan Coal Mine and the theory of high pressure water jet coal breaking, the coal breaking pressure and flow rate are analyzed and the hydraulic punching equipment is selected. The test results show that when the punching pressure is 8 鈮，

本文编号：2495012