保护层上风巷穿层钻孔抽采被保护层卸压瓦斯的试验研究

Experimental Study of Gas Relief from Protected Seam by Gas Drainage through Crossing Holes in Upper Airway of Protective Seam

谢桥矿1242(1)工作面在回采过程中,通过采用地面钻井、底板抽采巷、上风巷穿层孔抽采被保护层卸压瓦斯,以及顶板走向钻孔和采空区埋管综合治理瓦斯技术,取得了较好的效果,尤其是在地面钻孔失效范围采用保护层工作面上风巷穿层钻孔抽采被保护层卸压瓦斯,是矿井在特殊条件下瓦斯抽采方式上的一个新的尝试。

In the extraction process of No. 1242 (1) coal face in Xieqiao Mine, some comprehensive gas control techniques were applied including drilling holes on surface, gas drainage from floor roadway, gas drainage in the upper airway from protected seam by crossing holes, drilling holes along roof strike and burying drainage pipes in the gob, better affect was obtained, especially the gas drainage in the upper airway from protected seam by crossing holes in the ineffective range of surface drilling, this is a new attempt of mining and gas drainage under special mine conditions.