这里指的惰气不是化学元素表上的稀有惰性气体,而是指在一般情况下,不易与其他化学物质起作用的,本身不能燃烧,又不助燃的气体,在煤矿应用的通常是氮气;炉烟气;二氧化碳三种.惰气用于煤矿防灭火与其他防灭火物质比较,具有如下特点:1.惰气可以充满任何形状的燃烧空间,排挤掉氧气,从而冲淡空间中氧气的含量而将火源窒熄; Here, inert gas is not a noble inert gas on a chemical element list, but refers to a gas which, under normal circumstances, does not easily work with other chemicals and can not be combusted or burned by itself, and is usually used in coal mines. Furnace flue gas, carbon dioxide 3. Inert gas used in coal mine fire prevention and control of fire and other fire-fighting material compared with the following characteristics: 1. Inert gas can be filled with any shape of the combustion space, squeezing out oxygen, thus diluting the oxygen content in the space Will extinguish the source of fire;