不同温度下气体竞争吸附特性对煤微观结构响应研究进展

Research progress on response of gas competitive adsorption characteristics on coal microstructure at different temperatures

煤矿井下瓦斯与煤自燃复合灾害是制约煤矿安全生产的主要因素,采空区遗煤自燃氧化特征与残余瓦斯和起始温度密切相关。综述了固-气吸附理论模型的研究进展,系统分析了国内外学者在多元气体竞争吸附特征、不同温度下含瓦斯煤微观孔隙结构演化及微观基团演变特征等方面涉及的研究方法、试验平台及最新进展,论述了不同温度条件下煤的孔隙特征变化特征以及大分子、官能团演变规律。

The compound hazard of gas and coal spontaneous combustion in underground coal mines is a major factor limiting the safe production of coal mines, and the oxidation characteristics of coal spontaneous combustion of residual coal in the mining area are closely related to the residual gas and the starting temperature. We reviewed the research progress of solid-gas adsorption theoretical models, systematically analyzed the research methods, experimental platforms and recent progresses involved in the competitive adsorption characteristics of multi-gas, microscopic pore structure evolution and microscopic group evolution characteristics of gas-bearing coal at different temperatures by domestic and foreign scholars, and discussed the characteristics of pore characteristics changes and the evolution laws of macromolecules and functional groups of coal under different temperature conditions.