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煤相■突出(以下简称瓦斯突出或突出)是煤矿井下一种复杂的动力现象,由于它发生的突然力的破坏性,对煤矿安全生产是一种严重的危害。研究瓦斯突出机理,查明其影响因素并开展予测予报,是煤矿生产中急待研究解决的重要课题。从地质角度研究煤与瓦斯突出机理和予测予报,近几年来在我国已经引起了较为普遍的重视。大量的研究成果都肯定了瓦斯突出分布是不均衡的,这种不均衡性与地质条件的差异性有着密切的关系。但从地质角度解释突出机理目前还存在有不同的观点和看法。有的强调煤层顶底板岩性的作用;有的强调煤的结构性能;还有的强调地质构造和地应力的作用。对地应力的问题又有强调古构造应力为主与强调现今构造应力为主的两种看法等
Coal facies ■ Outburst (hereinafter referred to as gas outburst or highlight) is a complex dynamic phenomenon in coal mines, which is a serious hazard to coal mine safety production due to its sudden destructive force. Studying the mechanism of gas outburst, ascertaining the influencing factors and carrying out the forecasting report is an important issue to be urgently studied and solved in coal mine production. From the geological point of view of coal and gas outburst mechanism and forecast to the newspaper, in recent years in our country has aroused more widespread attention. A large number of research results have affirmed that gas outburst distribution is not balanced. This imbalance has close relationship with the difference of geological conditions. However, there are still different views and opinions on how to explain the prominent mechanism from a geological point of view. Some emphasize the role of top and bottom of coal seam lithology; some emphasize the structural properties of coal; others emphasize the role of geological structure and stress. On the issue of geostress, there are two kinds of views that emphasize paleotectonic stress and emphasis on present tectonic stress