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近几年来,随着矿井生产的集中强化和开采深度的增加,造成巷道瓦斯涌出量增加,特别是开采有瓦斯和自燃发火倾向煤层,对提高矿井产量是重要的抑制因素。同时必须指出:近年来,即使在瓦斯涌出量不大的矿井中也发生事故。经验表明,采掘工程没有具体的施工方案,不考虑所采取措施的特殊性和综合影响,仅仅利用安全操作规程是不能保证安全的。任何事故的发生都是可能的,问题在于能否选择控制主要危险的方法以减少矿井工伤事故。 对瓦斯燃烧情况的分析证明,相当多的事故是在绝对瓦斯涌出的平均值或低于平均值的情况下发生的。根据马克耶夫采矿工业科学研究所的资料,瓦斯燃烧事故多半是在瓦斯浓度未超限的回风区、回采工作面和准备巷中发生的。有19.1％的瓦斯燃烧事故发生在瓦斯浓度0.5％以下(77.3％发生在0.5～1％,3.6％发
In recent years, with the concentration of mine production and the increase of mining depth, gas emission from the roadway has been increased. In particular, coal seams with gas and spontaneous combustion tendency have been exploited, which is an important inhibitory factor for increasing mine output. At the same time, it must be pointed out: In recent years, accidents have occurred even in mines with small gas emission. Experience has shown that there is no specific construction plan for the excavation project, and the safety and operational practices can not be guaranteed without considering the particularity and comprehensive impact of the measures taken. The occurrence of any accident is possible, the question is whether we can choose to control the main danger of ways to reduce mine accidents. Analysis of gas combustion conditions demonstrates that a significant number of accidents occur at or below the average of the absolute gas emission. According to the information provided by the Mukayef Institute of Mining Industry Science, gas burning incidents mostly occurred in the return air area where the gas concentration was not exceeded, the mining face and the preparation lane. 19.1% of gas burning accidents occurred below 0.5% of gas concentration (77.3% occurred at 0.5 ~ 1%, 3.6%