库兹巴斯自1976至1980年间,平均每年发生内因火灾34次,其中75%是生产采区老塘火。仅1980年就因发生火灾,封闭了日产煤1.06万 t 的回采工作面26个,冻结工业储量316.7万 t,而且综合机械比开采煤层的发火次数呈现增多的趋势。 Kuzbass had an average of 34 internal fires each year between 1976 and 1980, of which 75% was the production of Laotang Fire. In 1980 alone, a total of 26 coal mining faces with a daily output of 10,600 tons of coal were closed due to a fire. The industrial reserves were frozen to 3.167 million tons, and the number of comprehensive mechanical fires tended to increase over that of the coal seams.