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为了研究孤岛综放开采条件下采空区内浮煤的自然发火规律,对南屯煤矿63_上10孤岛综放面随工作面的推进,对采空区的气体成分及温度进行了观测和研究,确定采空区自燃“三带”分布;提出在俯斜式开采条件下,63_上10孤岛综放面采空区内煤层自燃带的宽度比四周都为实体煤综放面采空区自燃带宽度减小,因而自然发火的危险性减小的结论。
In order to study the law of spontaneous combustion of floating coal in goaf in fully mechanized top-coal caving mining, the gas composition and temperature of goaf in 63_10 island fully mechanized top-coal caving face in Nantun Coal Mine were observed and analyzed with the advancement of working face. It is proposed that the width of spontaneous combustion zone in coal mined area in the gob of 63 10 on the island is more than that of the fully mechanized coal caving face in four weeks Zone auto-ignition band width decreases, thus reducing the risk of spontaneous combustion conclusion.