Application research of mine spontaneous combustion fire monitoring system with beam tube
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摘要: 分析了国内外矿井自燃火灾束管监测系统的发展历程及特点，指出澳大利亚研制的矿井自燃火灾束管监测系统能够及时反映自燃区域主要气体的变化趋势，可为矿井自燃火灾提供有效预警。该系统在某煤矿综采工作面的应用结果表明，随着综采工作面的推进，采空区内的O2体积分数逐渐降低，采空区深部边缘的O2体积分数为5%～6%，并逐渐趋于稳定；在综采工作面100～150 m内，采空区内的O2体积分数仍然维持在8%以上，应采取相应的技术措施防止采空区遗煤发生自燃现象；在综采工作面150 m外，采空区基本处于窒息状态。Abstract: The paper analyzed development course and characteristics of mine spontaneous combustion fire monitoring system with beam tube at home and abroad, and indicated mine spontaneous combustion fire monitoring system with beam tube developed by Australia can reflect change trend of main gas in spontaneous combustion areas in time, so as to provide effective pre-warning for mine spontaneous combustion fire. The application result in fully-mechanized face of a coal mine shows that volume fraction of O2 of goaf gradually decreases with advancing of fully-mechanized face, the volume fraction of O2 of deep edge of the goaf is 5%～6% and becomes stable; the volume fraction of O2 of the goaf still keeps above 8%, so it should take corresponding technology measures to prevent phenomenon of spontaneous combustion of residual coal in the goaf within 100～150 m of the fully-mechanized face; the goaf is in asphyxia state beyond 150 m of the fully-mechanized face.
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Keywords:
- fully-mechanized face /
- goaf /
- spontaneous combustion fire /
- beam tube /
- pre-warning
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