煤粒瓦斯扩散特性的研究现状与进展

Research Status and Progress of Diffusion Characteristics of Gas from Coal Particles

对煤粒瓦斯扩散特性的研究进行了系统地梳理,认为可将该领域的研究成果分为:线性扩散理论、基于时变扩散系数的瓦斯扩散理论与多因素影响下的瓦斯扩散理论。在此基础上,通过详细分析,认为当前煤粒瓦斯扩散特性的研究方向可概括为:(1)考虑煤粒形状的瓦斯扩散特性的研究;(2)吸附解吸迟滞现象对煤粒瓦斯扩散特性的影响;(3)开展多物理场耦合作用下的煤粒瓦斯扩散特性研究。

In this paper, systematical study was carried out on the diffusion characteristics of gas from coal particles,it was believed that the research results in this field can be divided into the linear diffusion theory, the gas diffusion theory based on the time-varying diffusion coefficient and the multi-factor diffusion theory. On this basis and through a detailed analysis, it was believed that the current research direction of the diffusion characteristics of gas from coal particles can be summarized as follows：①the study on gas diffusion characteristics in consideration of the coal particle shape;② the influence of adsorption and desorption lagging on the diffusion characteristics of gas from coal particles;③ the study on diffusion characteristics of gas from coal particles under the action of multi-physical field coupling.