针对考虑流固耦合的瓦斯运移问题,本文基于对前人研究的分析,总结了关于含瓦斯煤体的有效应力原理及瓦斯运移机理的研究成果。指出了研究中存在的主要问题,得出了以下结论:①关于煤与瓦斯的有效应力原理,亟需给出吸附膨胀应力及孔隙压力的分担比例;②关于瓦斯在煤体中的运移机理,应考虑如何在瓦斯的运移过程中彻底地区分扩散和渗透过程。
View of the problem of gas migration in considering fluid‐structure interaction ,based on the analysis of previous studies ,this paper summarizes about the effective stress principle and the gas migration mechanism of the coal containing gas ,points out the problem .The conclusions are as follows:① the principle of effective stress on coal and gas needs to be given the shared adsorption between expansion stress and pore pressure ;② about the mechanism of gas migration in coal ,the key is how to distinguish seepage and diffusion process completely .Then the research prospect is given .