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为有效防治高瓦斯、易自燃煤层综采工作面采空区瓦斯与煤自燃共生灾害,以111811综采面为背景,通过现场实测和数值分析,研究得出了采空区瓦斯浓度和自燃氧化气体浓度的分布规律。现场实际应用注氮防灭火效果良好,有效抑制了煤炭自燃,消除了瓦斯与煤自燃共生致灾的可能性,保障了安全开采。
In order to effectively prevent and control the gassy and spontaneous combustion symbiotic disasters in the fully mechanized coal mining face with gassy and spontaneous combustion, taking the 111811 fully mechanized coal mining face as the background, through field measurement and numerical analysis, the gas concentration and spontaneous combustion of goaf Gas concentration distribution. The actual application of nitrogen injection fire prevention and fighting effect is good, effectively inhibiting the spontaneous combustion of coal, eliminating the possibility of gas and coal spontaneous combustion symbiotic hazards, to ensure safe mining.