【摘要】 以新疆拜城矿区及库拜矿区煤体作为研究对象，以高低阶煤体孔隙特征及吸附规律研究为出发点，采用实验室测试等方法研究不同煤阶煤体物质组成、孔隙结构等对其吸附解吸特征的影响规律。结果表明，高阶煤体密度高于低阶煤体，但孔隙率低于低阶煤体；高低阶煤煤体密度均随镜质组含量增加而降低，随矿物含量增加而增加；通过液氮吸附试验发现高低阶煤煤体比表面积相差较小；等温吸附试验结果表明煤体最大吸附量与镜质组反射率呈正相关关系，与镜质组含量呈正相关关系，与惰质组含量呈负相关关系。试验结果可为后续新疆低阶煤煤层气开发提供一定借鉴意义。更多还原

【Abstract】 Taking coal bodies in Baicheng and Kubai mining areas in Xinjiang as research objects, starting from the study of pore characteristics and adsorption laws of high and low rank coal body, laboratory tests and other methods were used to study the influence law of material composition and pore structure of different coal ranks on their adsorption and desorption characteristics.The results show that the density of high rank coal body is higher than that of low rank coal body, but the porosity is lower than that of low rank coal body; The density of high and low rank coal body decreases with the increase of vitrinite content, and increases with the increase of mineral content; Through liquid nitrogen adsorption test, it was found that the difference in specific surface area between high and low rank coal body is small; The isothermal adsorption test results show that the maximum adsorption capacity of coal is positively correlated with vitrinite reflectance, positively correlated with vitrinite content, and negatively correlated with inertinite content.The test results can provide some reference significance for the subsequent development of low rank coal seam methane in Xinjiang.更多还原