采煤工作面回风隅角瓦斯治理探讨

Discussion on Gas Control at Return-air Corner of Mining Face

针对上下邻近层的瓦斯涌出对开采层工作面影响较大的实际现状,通过分析矿井煤层地质及瓦斯赋存状况和涌出量,研究了采空区瓦斯积聚O型圈的范围,设计试验了高位钻孔、栈道钻孔及参数设置,实现了高效抽采向工作面回风隅角涌出的瓦斯,保证了安全生产。对相似瓦斯地质条件下开采的矿井具有借鉴作用。

The gas emission from the upper and lower adjacent layers has a greater impact on the mining face.On the analysis of the geology,gas occurrence and emission of coal seam,the O-ring range of gas accumulation in goaf was studied,high-level drilling,plank road drilling and their parameters were designed and tested,and the efficient extraction of the gas emission to the return air corner was realized,which could ensure the safe production.It can be used as a reference for mines mined under similar gas geological conditions.