论文部分内容阅读
西德在1968年至69年间,发生自然发火二十四件。煤矿经常因煤炭自燃遭受巨大损失。这种由于瓦斯自燃而引起的灾害,不仅危害人的生命安全而且也造成严重的物质损失,除了机械和其他物质损失外经常是整个井田都不得不报废。残留在采空区的煤、在断层附近和巷道顶板中的煤以及由于开采困难而残留的煤柱,特别容易自燃。对这样的火灾已有了许多防止措施,如防
From 1968 to 69, West Germany had 24 spontaneous fires. Coal mines often suffer huge losses due to spontaneous combustion of coal. This disaster caused by gas spontaneous combustion not only endangers the safety of human life, but also causes serious material losses. In addition to mechanical and other material losses, the entire field is often obliged to scrap. Coal remaining in the gob area is particularly susceptible to spontaneous combustion of coal in the vicinity of the fault and in the roof of the roadway as well as pillars left behind due to mining difficulties. There have been many preventative measures against such a fire, such as prevention