煤田火灾风险评估指标分析

Analysis on Coalfield Fire Risk Assessment Index

通过对煤田火灾风险评估的各个指标进行分析比较,依照对煤田火灾影响作用的大小、方式,归类总结出影响煤田火灾的重要指标,即煤层自燃倾向性、煤层厚度、煤田地形、气候条件、煤田裂隙、煤层露头及植被指数,以此建立煤田火灾风险评估指标体系,并运用层次分析法对各指标的权重进行了分析计算,结果表明,在影响煤田火灾风险的指标中,煤层自燃倾向性对煤田火灾的影响最大,其次为煤层厚度、煤层露头及煤田裂隙,而煤田地形、气候条件和植被指数影响相对较小。

Through the comparison and analysis of the indexes in the coalfield fire risk assessment and in accordance with the size and way of their influence on the coalfield fire, the important indexes affecting the coalfield fire were classified and summarized in this paper, namely, the tendency of spontaneous combustion of coal seam, the thickness of coal seam, coalfield topography, climate conditions, coalfield cracks, the outcrop of coal seam and vegetation index, and based on this, an evaluation index system of coalfield fire risk was established, analysis and calculation were also made on the weight of each index by using the analytic hierarchy process. The results showed that among the indexes affecting the coalfield fire risk, the tendency of spontaneous combustion of coal seam had the greatest influence on it, followed by the thickness of coal seam, the outcrop of coal seam and the coalfield cracks, the influence of coalfield topography, climate conditions and vegetation index on it was relatively small.