电缆是社会生产生活中不可缺少的重要基础设施，工业发展规模的日益增大使能源的需求日益增长．相应地对电缆的使用量也在大幅度上升。然而，由于电力需求量的不断增加所造成的电缆过载、各种环境因素造成的电缆绝缘层老化和施工过程中出现的电缆铺设不规范、孔洞封堵不严密等各种原因导致了化工、冶金、变电站等大型工矿企业的电缆火灾事故时有发生，其所造成的直接或间接经济损失日益严重。因此电缆的防火就显得越来越重要…… Cables are an indispensable and important infrastructure in the production and life of society. With the increasing scale of industrial development, the demand for energy is growing day by day. Correspondingly, the use of cables is also increasing dramatically. However, due to the overload of cables caused by increasing power demand, aging of the cable insulation caused by various environmental factors and the cable laying irregularities in the construction process and the improper plugging of the holes have led to various reasons such as chemical industry, metallurgy , Substations and other large industrial and mining enterprises of cable fire accidents have occurred, the direct or indirect economic losses caused by its increasingly serious. Therefore, the cable fire is more and more important ...