黄陵二号煤矿顺层预抽钻孔合理封孔深度探讨

Discussion on the reasonable sealing depth of bedding pre-drainage borehole in Huangling No.2 coal mine

为解决黄陵二号煤矿瓦斯抽采效率低问题,采用数值分析和现场试验相结合的方法,获得了黄陵二号煤矿顺层瓦斯抽采钻孔合理封孔深度。研究结果表明,为保障黄陵二号煤矿瓦斯抽采效率,顺层瓦斯抽采钻孔合理封孔深度为13 m。

In order to solve the low efficiency problem of gas extraction in Huangling No. 2 coal mine, by using the numerical analysis and field test methods,the reasonable sealing depth of bedding pre-drainage borehole was researched. The results show that the reasonable sealing depth is 13 m,which can guarantee the efficiency of gas extraction in Huangling No. 2 coal mine.