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在矿井中,当压力升高时煤层所吸附的气体混合物的主要成分是甲烷,在煤和瓦斯突出的预测方法中,大多重视对甲烷成分的测定、而对混合物中其他气体的定性和定量成分则未进行深入研究.但是,大家知道,在以甲烷为主的气体混合物中也含有二氧化碳气体(平均含量为1%).参考文献所列资料表明,在压缩条件下,受压的二氧化碳气体对煤的力学性能的影响比甲烷大得多可以假设,如果无烟煤层所含的混合气体中有二氧化碳成分,那么,它对无烟煤的力学性能将有极其重要的影响.
In coal mines, the main component of the gas mixture adsorbed by the coal seam when the pressure is increased is methane. In coal and gas outburst prediction methods, the emphasis is mostly on the determination of methane components, but on the qualitative and quantitative components of other gases in the mixture It has been known that carbon dioxide gas (with an average content of 1%) is also contained in the methane-based gas mixture, and the information provided in the reference shows that under the compression conditions, the pressure of the carbon dioxide gas pair The effect of mechanical properties of coal is much greater than that of methane. It can be assumed that if the mixture contains carbon dioxide, the anthracite coal will have a very important effect on the mechanical properties of anthracite.