巷道布置对易燃厚煤层自然发火危险性的影响

为了有效地对煤矿自然发火危险性进行评估,控制煤矿自然发火源和降低火灾危险性.结合模糊数学和多目标决策理论,运用层次分析法建立评价工作面自然发火危险度的指标体系和评价模型,采用现场专家打分法确定一次采全高不同巷道布置形式开采易燃厚煤层单因素依附目标层的隶属度,并对镇城底矿22204工作面煤炭自然发火危险程度进行定量评估.对比得出,在易燃厚煤层中改革巷道布置,可以降低煤层自然发火概率.

Mine roadway layout affected to spontaneous fire danger of spontaneous thick seam

In order to effectively assess the spontaneous fire danger in coal mine, to control the spontaneous fire resource in mine and to reduce the spontaneous fire dangers in mine, the fuzzy mathematics and multi layer analysis method was applied to set up an index system and assessment model of the spontaneous fire dangerous degree of the coal mining face in combined with the fuzzy mathematics and multi target decision theory. The related degree of the related target seam for the single factor to mine the full height of the spontaneous combustion thick seam with different mining gateway layout was confirmed with the marks given by the experts at the mine site. And also the spontaneous fire danger of the No. 22204 coal mining face in Zhenchengdi Mine was assessed in quantity. The comparison results showed that the reform of the gateway layout in the spontaneous combustion thick seam could reduce the spontaneous fire rate in the seam.