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对华丰煤矿1409大倾角综放面开采面临的防火问题进行分析,在实验室对四层煤自燃特性参数进行测试,研究主要影响因素;结合现场观测结果,判定采空区自燃危险区域分布规律;利用SF6示踪气体检测采空区漏风通道、分析其漏风强度,掌握采空区的漏风规律。根据研究结果,制定综合防火方案,抓好方案落实,有效的防治了采空区煤层自燃。
This paper analyzes the fire prevention problems of 1409 large-angle fully mechanized caving face in Huafeng Coal Mine, tests the self-ignition characteristic parameters of four-layer coal in laboratory, and studies the main influencing factors. Combining with the on-the-spot observation results, the distribution law of spontaneous combustion dangerous area ; Use SF6 tracer gas to detect the air leakage passage in the gob area, analyze its air leakage intensity and master the air leakage law in the gob area. According to the research results, formulate a comprehensive fire prevention plan, do a good job in implementing the plan and effectively prevent and control the spontaneous combustion of coal seam in the goaf.