摘要
郭村煤矿为"三软"低透气性煤层高瓦斯矿井,通过对工作面的不同瓦斯涌出源状况和瓦斯浓度分布规律进行分析,掌握回采工作面瓦斯涌出的状况及随时空的变化规律,据实测数据得知,落煤及煤壁瓦斯涌出占工作面瓦斯涌出的66%,采空区瓦斯涌出占39%。根据瓦斯涌出情况,采用顺层钻孔、煤墙浅孔、上隅角埋管、高位抽放孔等瓦斯综合抽放措施,有效解决了工作面的瓦斯问题。
Guo cun coal mine belongs to the ＆quot;Three Soft＆quot; low permeability coal seam in high gas mine, through analyzed the working face gas emission sources and different condition of the gas concentration distribution rules, to master the gas emitted status and the changes rules with time and space, the measured data show the gas emission of Coal cutting and coal wall of working face accounted for 66%, the gob gas emission accounted for 39%. According to the gas emission, using bedding drilling, shallow hole in coal wall, buried pipe in the upper corner, high drainage hole and so on gas comprehensive drainage measures, effectively solves the problem of gas.
出处
《山东煤炭科技》
2015年第1期77-79,共3页
Shandong Coal Science and Technology
关键词
三软煤层
瓦斯涌出规律
瓦斯治理
three soft coal seam
gas emission law
gas control
