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一、前言 众所周知,回所工作面最容易发生积聚瓦斯的地点就是上隅角。所以,如何防止和处理回采工作面上隅角积聚瓦斯已成为防止采面发生瓦斯事故的关键措施。 目前,国内在无抽放和无尾巷排放的条件下,上行“U”型通风系统回采工作面上隅角积聚瓦斯的处理尚未得到很好的解决,实践中,我们采用水力(压气)驱动抽出式局扇抽排处理上隅角积聚瓦斯,取得了一定的成效。
First, the preamble As we all know, back to the work surface most likely to accumulate the location of gas is on the corner. Therefore, how to prevent and deal with the accumulation of gas on the corner of the mining face has become the key measure to prevent gas accidents on the mining face. At present, the treatment of accumulating methane on the upper corner of the U-shaped ventilation system in the ascending road has not been well solved in the domestic without drainage and tailless lane discharge. In practice, we use hydraulic (pneumatic) drive Draw-out bureau fan exhaust treatment on the corner accumulation of gas, and achieved some results.