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首页> 外文期刊>Journal of coal science & engineering (China) >Analysis of the danger zone liable to spontaneous ignition around coal roadway at fully mechanized long-wall top-coal caving face
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Analysis of the danger zone liable to spontaneous ignition around coal roadway at fully mechanized long-wall top-coal caving face

机译：综放沿空巷道易自燃危险区分析。

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摘要

The intensity of heat output of coal, the rate of oxygen consumption and the influence function of coal size are tested by the big coal spontaneous combustion experiment unit. The independence of the coefficient of heat convection is studied. And based on the conservation principle of energy and the real conditions, such as coal temperature, air temperature, the geometry size of roadway, air flux, the oxygen concentration in the loose coal around the roadway, the threshold parameters resulting coal spontaneous combustion are put forward, and the index determining the danger zone liable to self-ignite are evaluated. Finally, the method determining the danger zone liable to spontaneous ignition around coal roadway at fully mechanized long wall top-coal caving face is put forward. Based on the determination method and real conditions in the roadway, the coal around roadway can be divided four zones.
机译：通过大煤自燃实验装置测试了煤的热输出强度，耗氧率和煤尺寸的影响函数。研究了热对流系数的独立性。并根据能量守恒原理，结合煤温，气温，巷道几何尺寸，通气量，巷道周围松散煤中的氧气浓度，煤自燃的阈值参数等实际条件向前，评估确定易自燃危险区的指标。最后提出了确定综放工作面综放巷道易自燃危险区的方法。根据巷道的确定方法和实际情况，将巷道周围的煤分为四个区域。

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