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1.前言 由煤尘爆炸所引起的一些最严重的矿井事故,往往比纯瓦斯爆炸事故所造成的伤亡数量更大,对矿井设施的破坏更为严重。为此,每年都投入了一定的财力和技术力量来防治这种灾害。曾经应用的那些防治技术都是很早以前已取得的试验成果,而这些技术并非建立在可靠基础之上,因为对主宰着煤尘爆炸传播的一些因素的认识还很不全面。 如果能够对煤尘爆炸变化过程的机理有所认识,并因而能在矿井里正确地采取适当的防治措施的话,那么煤矿井下工作的安全状况就能够得到显著的改善。
1. INTRODUCTION Some of the most serious mine accidents caused by coal dust explosions have tended to outweigh the number of casualties caused by pure gas explosions and devastate mine facilities. Therefore, every year, some financial and technical resources have been devoted to preventing and controlling such a disaster. Those control technologies that have been used are the results of experiments that have been made so long ago that these technologies are not based on a solid foundation because the understanding of some of the factors that dominate the spread of coal dust explosions is still far from comprehensive. If the mechanism of coal dust explosion can be recognized and the proper prevention and control measures can be properly taken in the mine, then the safety of coal mine work can be significantly improved.