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采用上行Ｕ型通风的采煤工作面，其上隅角是最易聚积瓦斯的地方，因此，如何解决采面上隅角的瓦斯聚积超限，一直是防止采面发生瓦斯事故的关键所在。鹤壁八矿利用普通的胶质风筒使采面上行Ｕ型通风改变为Ｙ型通风，成功地解决了采面上隅角瓦斯聚积，保证了安全生产。１ 方法?
Therefore, how to solve the gas accumulation overhang on the upper corner of mining face has always been the key to prevent gas accidents on the mining face. Hebi BOP using common colloidal duct make the U-shaped ventilation of the mining face to Y-type ventilation, successfully solved the accumulation of gas in the upper corner of the mining face to ensure safe production. 1 method?