而在许多矿井的生产实践中，掘进工作面瓦斯涌出量却显示出与直接源涌出量不一致的特性，常常出现瓦斯涌出异常现象。
However in the productive practice of mining, the gas gush quantity in dig working face is different with the gas fountain, it often shows abnormity.
国内外统计资料表明，高瓦斯矿井发生瓦斯爆炸事故的机率并不是很高，低瓦斯矿井的瓦斯涌出异常区却时有瓦斯爆炸事故发生。
According to domestic and international statistic data, the occurrence probability of gas explosion is not very high, but it occasionally occurs in gas abnormal effusing area of low gas mines.
首次运用瓦斯地质理论研究低瓦斯矿井瓦斯异常涌出问题，形成了系统的低瓦斯矿井瓦斯地质规律的研究思路和方法。
The theory of gas geology is applied to study the problem of gas unusual gush at first, and set-ting up systematic research thinking and method of gas geology in the low gas mines.
首次运用瓦斯地质理论研究低瓦斯矿井瓦斯异常涌出问题，形成了系统的低瓦斯矿井瓦斯地质规律的研究思路和方法。
The theory of gas geology is applied to study the problem of gas unusual gush at first, and set-ting up systematic research thinking and method of gas geology in the low gas mines.
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