为了考察煤的显微组分与比表面积之间的关系,采用理论分析、实验室实验及数据分析的方法,获得了煤的显微构成及比表面积值,利用综合评价的方法揭示出两者之间的关系.研究结果表明,对煤比表面积起主要作用的是基质镜质体、半丝质体、粗粒体和微粒体,其中基质镜质体以大孔为主,与煤比表面积呈负相关关系,半丝质体和粗粒体褐煤时以大孔为主,气煤时以微孔为主,微粒体以微孔为主,与煤比表面积呈正相关关系;综合评价法适合研究煤的显微组分与比表面积的关系,为测量煤比表面积节约了大量的时间及成本,对进行矿山开采及煤炭研究具有重要意义. In order to investigate the relationship between the microstructure and specific surface area of ​​coal, the microstructure and specific surface area of ​​coal were obtained by theoretical analysis, laboratory experiments and data analysis. The comprehensive evaluation method was used to reveal both The results show that the main surface area of ​​coal play a major role in the matrix vitrinite, semi-silk body, coarse and microscopic bodies, in which the main vitrinite matrix macropores, and the specific surface area of ​​coal There was a negative correlation between the semi-filamentous body and coarse-grained lignite with macropores, while the gas-coal was dominated by micropores. The micropores were mainly micropores, which was positively correlated with the specific surface area of ​​coal. The comprehensive evaluation method was suitable Studying the relationship between the micro-components and the specific surface area of ​​coal has saved a great deal of time and cost in measuring the specific surface area of ​​coal, which is of great significance for mine exploitation and coal research.