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。

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In this paper, hazard theory is combined with coal mine gas accident and coal mine hazard is put forward, analyzing gas accident hazard by the three class of hazard.

本文将危险源理论和煤矿瓦斯事故相结合，提出煤矿危险源这一全新概念，用三类危险源思想来分析瓦斯事故危险源。

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On the basis of studying on identification, classification, gradation of gas accident hazard, the structure of coal mine gas accident is analyzed by means of typical accident.

在研究瓦斯危险源辨识方法、分类分级方法的基础上分析煤矿瓦斯危险源系统结构，通过典型事故案例剖析煤矿瓦斯事故危险源系统结构。

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