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众所周知,湖南省红卫煤矿坦家冲井煤与瓦斯突出极为严重,突出次数多,突出强度大,至1981年底突出总数达174次,千吨以上特大型突出10次,最大强度达4500t;同时,相应地矿井瓦斯涌出量亦很大,相对瓦斯涌出量和绝对瓦斯涌出量最高分别达74.45m~3/t 和12.24m~3/min。第一自然分层采掘时的瓦斯突出和超限,严重地影响着矿井的正常生产。为此,该矿曾先后开展过
It is well-known that the coal and gas outburst of Tanjiachui coal mine in Hongwei Mine in Hunan Province is extremely serious with prominent number of times and prominent intensity. By the end of 1981, the total number of outstanding coal was 174 times, and over ten thousand tons of super large type stood 10 times with maximum strength of 4500 tons. Correspondingly, the gas emission from the mine is also very high. The highest gas emission and the absolute gas emission are respectively 74.45m 3 / t and 12.24m 3 / min. The first natural stratified mining gas outburst and overrun, seriously affecting the normal production of the mine. To this end, the mine has been carried out