高瓦斯工作面上隅角瓦斯治理技术

Gas Treatment Technology of Upper Corner in High Gas Mining Face

兴安煤矿对高瓦斯采煤工作面采用仰斜钻孔、上隅角插管、底板巷道抽放采空区等综合治理瓦斯技术,由于21号煤层顶板坚硬,工作面倾向较短,后部采空区不易冒落,仍存在上隅角瓦斯超限隐患,严重困扰通风瓦斯管理,制约工作面的安全生产。介绍了采煤二队利用外错尾巷抽放进行综合瓦斯治理,防止了高瓦斯采煤工作面上隅角瓦斯超限。

Xingan coal mine in high gas coal mining face uses comprehensive gas control technology such as upward inclined drilling,the upper corner intubation,floor roadway drainage mined-out area and other.Because No.21 coal seam roof is hard,the face tendency is shorter,the mined-out area is not easy caving,there is the hidden dangers of gas overrun in upper corner,seriously trouble ventilation gas management,and restricted safety in production.Introduces the coal mining 2nd team using outward intervening tail roadway drainage carries out comprehensive gas management,prevents gas overrun of upper corner in the high gas coal mining face.