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为了降低高瓦斯采掘工作面瓦斯涌出强度,消除瓦斯超限对生产的影响,采用水力扩孔技术,在煤体中打一定深度的钻孔,利用高压水经钻孔冲刷煤体,使煤体中的吸附瓦斯得以解吸释放。文章以淮南矿业集团潘三矿1792(3)运顺回风联巷为试验点,制定了实施方案,分析了水力扩孔防突措施的卸压增透效果,实现了卸压排放瓦斯的目的。
In order to reduce the gas emission intensity of high-gas mining face and eliminate the influence of gas overrun on the production, the hydraulic reaming technology is used to drill a certain depth in the coal body and the high-pressure water is used to scour the coal body through the borehole to make the coal The body’s adsorbed gas is released by desorption. Based on the 1792 (3) Yunshun air-return roadway of Pan San Mine of Huainan Mining Group as the test point, the article has made an implementation plan and analyzed the effect of pressure-relief and penetration enhancement by means of hydraulic expansion and outburst prevention measures to achieve the goal of releasing gas through gas drainage .