库兹巴斯各矿井用顶板陷落法开采急倾斜厚煤层时损失大量的煤炭并造成漏风,从而导致内因火灾。 1970年～1975年全苏矿业科学研究所东部分所拟定了防治内因火灾的新方法。这种方法的实质是在回采工作的后方建立起由泡沫或粘土泡沫悬浮液形成的不透气的帷幕来预防采空区火灾,从而对采区进行局部防火,这样,采煤工作可以不致间断。 但是,向采空区压入空气泡沫进行防火的想法,在初期阶段常引起许多疑议。显 In the Kuzbass mines, the loss of a large amount of coal and the leakage of air caused by the mining of steeply sloped thick coal seams by the roof subsidence method led to internal fires. From 1970 to 1975, the eastern part of the Institute of Mining Science and Technology of the Soviet Union drafted a new method of preventing and controlling internal fires. The essence of this method is to prevent a goaf fire by establishing a gas impermeable curtain formed by a foam or clay foam suspension behind the work of extraction to locally fire the mining area so that the coal mining work can be continued uninterrupted. However, the idea of ​​putting air foam into the goaf for fire prevention has often caused many doubts in the early stages. Significantly