Coal and gas outburst is one of the major disaster accidents in coal mines, which is a serious threat to the coal mine production safety.
煤与瓦斯突出是煤矿重大灾害事故之一，严重威胁着煤矿的安全生产。
In China coal industry, coal mine gas accident is currently the biggest disaster, which has become a major constraining factor in production of coal mine safety.
在我国煤炭行业中，瓦斯事故是当前煤矿生产的最大灾害，目前已成为制约煤矿安全生产的主要因素。
Gas is one of the sources which are the major disaster such as coal mine and underground transport hub.
瓦斯是发生在诸如煤矿、地下交通枢纽等领域的重大灾害的根源之一。
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