抚顺煤矿是已开采70多年的老矿,属新生代第三纪特厚煤层,煤质为长焰沥青煤,疏松易碎,层理节理发达,极易自然发火,一般发火期为1～3个月,最短只有14天。据统计,从1949年至1983年的34年间共发生1026次矿井火灾,平均每12天就有一次,百万吨煤发火率为4.8次。几十年来,抚顺煤矿均应用页岩河沙充填来防止自然发火。最近几年又恢复了黄泥 Fushun Coal Mine is an old mine that has been mined for more than 70 years. It belongs to the Cenozoic Tertiary ultra-thick coal seam. Its coal quality is long-flame asphalt coal, which is loose and fragile. Its bedding joints are well-developed and prone to spontaneous ignition. Generally, the ignition period is 1 to 3 Month, the shortest only 14 days. According to statistics, a total of 1026 mine fires occurred during the 34 years from 1949 to 1983, averaging once every 12 days, with a firing rate of 4.8 tons per million tons of coal. For decades, Fushun Coal Mine has applied shale sand filling to prevent spontaneous combustion. Huang Nai has been restored in recent years