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本文讨论了有关热力学原理在煤层气体突出研究中的若干问题。煤层气体的突出现象不仅仅足一种动力现象,而且是一种热力学的能量转变过程。作者讨论了有关煤层气体突出的热力学模型和热力学的研究方法,提出在计算煤层气体内能时应考虑众多影响。煤层气体突出的热力学参数,如煤层气体组分和数量、热容、体系和环境温度和压力等。最后,作者还提出了煤层气体突出的“熵判据”原则,即利用各煤层气体的熵值相对大小来判别各煤层的突出倾向性。
This article discusses several issues related to thermodynamics in the study of coalbed gas outburst. The prominent phenomenon of coalbed gas is not only a dynamic phenomenon, but also a thermodynamic energy conversion process. The authors discuss the prominent thermodynamic models and thermodynamic research methods for coalbed gas and suggest that many impacts should be considered when calculating the internal energy of coalbed gas. The prominent thermodynamic parameters of coalbed gas, such as the composition and quantity of coalbed gas, heat capacity, temperature and pressure of the system and the environment. Finally, the author also puts forward the principle of “entropy criterion ” that the coalbed gas prominence, that is, using the relative size of the entropy of each coalbed gas to judge the prominent propensity of each coal seam.