论述了采空区防火机理,确定注氮管出口的埋设最佳位置.对采空区注氮进行效果检验,明确指出自燃带宽度,对自燃带进行重点防火,以峻德矿综采二队综放工作面采空区防火为例做了具体介绍.%The mechanism of gob fire is descried and the best location of nitrogen injection outlet burial is determined. Then the effect of nitrogen injection is tested and width of spontaneous combustion is pointed out, with the focus on the spontaneous combustion fire, fire prevention is introduced specifically with the example of second brigade of mechanized coal mine.
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