立井揭突出煤层工作面消突效果检验

金能公司3#煤层为煤与瓦斯突出煤层。在副立井揭穿3#煤的过程中,该公司制定实施了副立井揭煤方案。井筒施工至煤层垂距30m时打前探钻孔,测定瓦斯压力,取样分析,根据结果进行瓦斯排放。排放完成后,再次测压,并采用钻屑瓦斯解析指标K1值来检验消突效果。

Measures Inspection of Vertical Shaft Exposing at Hazardous Coal Seam Working Face

The 3# coal seam of Jinneng Company of Shenhua Ningmei Group is a gas outburst coal seam.In order to prevent the danger,we formulated and implemented a project of unvovering coal in the auxiliary shaft in the process of uncovering 3# coal seam in the auxiliary shaft.We play leading drill in the place of 30 meters away from the coal seam in borehole construction process,measuring gas pressure,analyzing coal sample and eliminating gas according to the determination result.After the eliminating measure,we determinate the gas pressure again and use drilling cuttings gas analytical indexes K1 to inspect if the solutions are effective.