In this paper, the pore structure and methane adsorption properties of the primary structural and tectonic coals of the Handan Jiulong Mine were analyzed using low-temperature nitrogen adsorption experiments and isothermal adsorption tests. The relationship between pore structure and adsorption properties was discussed. The study results show that the total pore volume and specific surface area of the tectonic coal in the Jiulong Mine are larger than those of the primary structural coal. Small pores comprise most of the pore volume in the primary structural coal, followed by micropores and medium pores. The pore volume of the tectonic coal primarily consists of small pores, followed by micropores and medium pores. Micropores and medium pores consist of approximately the same volume. The specific surface area of both the tectonic coal and the primary structural coal is primarily micropores, followed by small, and medium pores. The microporous and small pore structures of the tectonic coal have open pore morphology. The pore shapes are primarily in the shape of ink bottles. The coal sample of primary structural coal contains both open pore morphology and numerous closed pore morphology. The pore shape is mainly columnar. The pressure-boosting adsorption process of coal samples conforms to the Langmuir isothermal adsorption equation. The maximum adsorption capacity of tectonic coals is greater than that of primary structural coals. The adsorption capacity and Langmuir volume (VL) of coal samples decrease with increasing temperature, while the Langmuir pressure (PL) increases with temperature. The larger the pore volume of coal samples, especially the micropore volume, the greater the adsorption capacity, and the richer the specific surface area of micro-pores, creating a more substantial adsorption capacity.

本文通过低温氮气吸附实验和等温吸附试验，对邯郸九龙矿原生构造煤和构造煤的孔隙结构和甲烷吸附特性进行了分析。讨论了孔结构与吸附性能之间的关系。研究结果表明，九龙矿构造煤的总孔隙体积和比表面积均大于原生构造煤。原生构造煤的孔隙体积以小孔隙为主，其次是微孔隙和中孔隙。构造煤的孔隙体积以小孔隙为主，其次为微孔隙和中孔隙。微孔和中孔的体积大致相同。构造煤和原生构造煤的比表面积均以微孔为主，其次为小孔、中孔。构造煤的微孔和小孔结构具有开孔形态。孔的形状主要是墨水瓶的形状。原生构造煤的煤样既含有开孔形态，又含有大量闭孔形态。孔隙形状主要为柱状。煤样的增压吸附过程符合Langmuir等温吸附方程。构造煤的最大吸附量大于原生构造煤。煤样的吸附量和朗缪尔体积（VL）随温度升高而减小，而朗缪尔压力（PL）随温度升高而增大。煤样的孔容特别是微孔容越大，吸附容量越大，微孔的比表面积也越丰富，产生的吸附容量就越可观。