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以神东矿区布尔台煤矿22104综采工作面为例,理论分析了瓦斯抽放对采空区自燃“三带”的影响因素,通过对瓦斯抽放条件下的采空区自燃“三带”范围进行现场实测,并利用数值模拟研究采空区有无瓦斯抽放时的采空区氧浓度场分布规律,对比分析采空区有无瓦斯抽放时的采空区自燃“三带”范围,掌握瓦斯抽放时对采空区自燃“三带”分布范围的影响规律,进而用于指导工作面的防灭火技术
Taking the 22104 fully mechanized coal mining face in Bo’er Tai Coal Mine in Shendong Mining Area as an example, the influencing factors of spontaneous combustion and “three belts” of gob in gas drainage are theoretically analyzed. By analyzing the influence of gas drainage on spontaneous combustion in goaf, Three zones “, and the numerical simulation was used to study the distribution of oxygen concentration field in the mined-out area with or without gas drainage. The spontaneous combustion of the mined-out area with or without gas drainage was compared and analyzed. ”Three belts“ range, to grasp the law of influence on spontaneous combustion of ”three belts" of the goaf when gas drainage, and then used to guide the fire prevention and extinguishing technology