高瓦斯突出煤层沿空留巷综合防灭火技术研究

Study on Comprehensive Fire Prevention and Extinguishing Technology of Retaining Roadway Along Goaf in High Gas Outburst Coal Seam

为解决高瓦斯突出矿井工作面上隅角瓦斯超限、采空区易自燃等问题,以古汉山矿1604留巷工作面为背景,通过现场试验提出瓦斯抽采和留巷综合防灭火技术,针对留巷挡矸侧密闭不严、受采动影响出现的裂隙加剧了向采空区漏风量,采取瓦斯抽采和堵、注、监测监控相结合的综合防控措施,有效抑制采空区遗煤自燃,实现了瓦斯和自然发火综合治理,确保了矿井安全开采。

In order to solve the problems of excessive gas in the upper corner of the working face and easy spontaneous combustion of the goaf area in the high gas outburst mine, based on the background of the 1604 working face of retaining roadway in Guhanshan Coal Mine, the comprehensive fire prevention and extinguishing technology of gas drainage and retaining roadway is put forward through field test. In view of the lax sealing of the gangue side of the retained roadway and the cracks affected by mining, the air leakage to the goaf area is aggravated, and the comprehensive prevention and control measures of gas drainage and plugging, injection, monitoring and inspecting are adopted. The spontaneous combustion of residual coal in goaf area is effectively restrained, the comprehensive control of gas and spontaneous combustion is realized, and the safe mining of the mine is ensured.