一、前言 矿山井下火灾乃是一种重大灾害,所以防止它的发生就显得极为重要,而更重要的是早期发现火灾和初期灭火。井下火灾的灭火方法有用水和灭火器的直接灭火法、喷雾及液氮灭火以及两种方法以上的综合灭火法。另外,作为通过控制通风的灭火法,原来采用过用空气袋及乙烯树脂隔板或封闭墙等封闭巷道的火灾窒息灭火法,然而封闭巷道需要 First, the preface Mine underground fire is a major disaster, so to prevent it from happening is extremely important, but more important is the early detection of fire and initial fire. Downhole fire extinguishing methods useful water and fire extinguishers direct fire, spray and liquid nitrogen fire extinguishing methods and more than two methods of fire. In addition, as a method of extinguishing fire by controlling ventilation, a fire suffocation fire extinguishing method using an air bag, a vinyl septa or a closed roadway such as a closed wall has been used. However, it is necessary to close the roadway