乌达煤矿采空区煤自燃影响因素评价分析

应用层次分析理论,选择影响乌达煤矿采空区煤自然发火的主要因素即煤的自燃倾向性、煤层的赋存条件、开采技术水平等,进行分析计算。依据层次分析法确定了采空区煤自燃各影响因素的权重系数,并对其进行总排序,最后进行综合评定各采空区煤自燃影响因素。评定结果表明:煤自燃倾向性M、煤的硫含量L、回采工作面推进速度g、地质构造d等是影响采空区煤自燃的主要因素。为制定相应的开拓开采方案和有效的防火措施,提供了科学的理论依据和切合实际情况的评价方法。

Evaluation and Analysis Influential Factors of Coal Spontaneous Combustion in Wuda Mine Goaf

By the theory of analytical hierarchy, the major factors affecting the spontaneous eambustion are selected in Wuda mine goal, for calculation and analysis, i.e. the liability of spontaneous combustion, the deposit ccndifion of coal seam, and the technique of exploitation. The weight of each factor is confirmed by analytical hierarchy, put the sequence in order, and comprehensively evaluated. The results show that tendency of spontaneous eambustion of coal, sulfur content sulfur in coal, advancing speed of working surface and geolcgic structure are the main factors, from which the risk degree for appraising the influential factors of the coal spontaneous combustion is obtained. It provides the scientific theoretical criteria and practical assessment method for establishing relevant exploitation scheme and efficient fire prevention measures.