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卡拉干达矿区的瓦斯控制问题不仅对保障安全生产,而且为采掘工作的高度集中创造先决条件都是非常迫切需要的。从1950年至1980年卡拉干达矿区年产煤量由1210万吨增加到4150万吨,井下排出的瓦斯由22万(米)~3/日增加到268万(米)~3/日,即增加到12倍,平均相对瓦斯涌出量由10.1米~3/吨增加到27米~3/吨。现在,除莫洛捷日矿井属于三级瓦斯矿外,其余的矿井都属于超级瓦斯矿。 在矿井瓦斯涌出量很大的情况下,除了用通风方法控制瓦斯外,广泛地采用从各种瓦斯来源抽放的方法。 在矿区内掌握和应用的瓦斯抽放方法有30多种。几种瓦斯抽放方法的沼气排出量列于表1:
The problem of methane control in the Karaganda mine is urgently needed not only to ensure safe production but also to create a high degree of concentration of excavation work. From 1950 to 1980, the annual coal production in Karaganda mine increased from 12.1 million tons to 41.5 million tons, and the gas discharged from the underground mine increased from 268,000 to 3,800,000 to 3,800,000 cubic meters per day, That is to say 12 times. The average relative gas emission increased from 10.1 m 3 / t to 27 m 3 / t. Now, with the exception of the Morogitil mine that belongs to the tertiary gas mine, the remaining mines are all super gas mines. In the case of a large amount of mine gas emission, in addition to using ventilation control of gas, widely used from various sources of gas drainage method. There are over 30 gas drainage methods grasped and applied in the mining area. The methane emissions from several gas drainage methods are listed in Table 1: