综放工作面采空区自然发火规律研究
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摘要
通过在建庄煤矿102综放工作面采空区两侧埋设热电阻,采用埋管真空泵监测采空区的温度和气体成分,观测出了采空区浮煤分布规律、工作面推采过程中的安全周期规律、氧气浓度分布规律、漏风强度分布规律,确定了采空区浮煤自燃极限和采空区自燃"三带"的危险范围。
By embedding thermal resistance on both sides of goaf in No. 102 fully mechanized caving face of Jianzhuang coal mine,and monitoring the temperature and gas composition of goaf with buried pipe vacuum pump,the distribution law of residual coal in goaf,the law of safety cycle,the law of oxygen concentration distribution and the law of air leakage intensity distribution in the mining face were observed,and the limit of spontaneous combustion of residual coal and the dangerous range of spontaneous combustion"three zones"in goaf were determined.
By embedding thermal resistance on both sides of goaf in No. 102 fully mechanized caving face of Jianzhuang coal mine,and monitoring the temperature and gas composition of goaf with buried pipe vacuum pump,the distribution law of residual coal in goaf,the law of safety cycle,the law of oxygen concentration distribution and the law of air leakage intensity distribution in the mining face were observed,and the limit of spontaneous combustion of residual coal and the dangerous range of spontaneous combustion"three zones"in goaf were determined.
引文
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