某矿近距离突出煤层群首采工作面瓦斯治理技术研究

Study on Gas Control Technology of First Mining Face in Close Outburst Coal Seam Group

矿井瓦斯事故严重影响煤炭资源正常生产,针对高瓦斯矿井的瓦斯处理问题,采用经验总结、理论分析以及现场验证与实践的手法,对近距离突出煤层群首采工作面瓦斯治理技术进行了研究,具体分析了近距离突出煤层瓦斯分布特征,提出了穿层钻孔预抽采、工作面回采预抽采以及采空区埋管抽采的首采面瓦斯治理措施,并通过工程实践验证了瓦斯治理措施的可行性。

Mine gas accidents seriously affect the normal production of coal resources.In view of the gas treatment problems in high-gas mines,this paper studies the gas treatment technology of the first mining face of close-distance outburst coal seam group by means of experience summary,theoretical analysis,field verification and practice and specifically analyzes the gas distribution characteristics of close-distance outburst coal seam.The gas control measures of the first mining face are put forward,including pre-extraction by drilling through strata,pre-extraction by working face and buried pipe extraction in goaf and the feasibility of gas control measures is verified by engineering practice.