CAJ | 학술논문

煤的表面能是致使煤具有吸附性差异的根本原因。通过分析动力变质作用对构造煤结构和组分的影响，借助甲烷等温吸附实验，计算了不同温度下随着压力增大，原生结构煤和构造煤吸附甲烷的煤表面能的变化情况，并从构造煤动力变质角度分析了其表面能变化的原因。结果表明：动力变质作用对构造煤结构和组分改造作用明显，构造煤比共生的原生结构煤微孔隙更发育，吸附能力更强；计算结果也表明，随着温度的升高和压力的增大，构造煤吸附甲烷的表面能降低值均大于共生的原生结构煤，构造煤吸附甲烷的能力更强。
매적표면능시치사매구유흡부성차이적근본원인。통과분석동력변질작용대구조매결구화조분적영향，차조갑완등온흡부실험，계산료불동온도하수착압력증대，원생결구매화구조매흡부갑완적매표면능적변화정황，병종구조매동력변질각도분석료기표면능변화적원인。결과표명：동력변질작용대구조매결구화조분개조작용명현，구조매비공생적원생결구매미공극경발육，흡부능력경강；계산결과야표명，수착온도적승고화압력적증대，구조매흡부갑완적표면능강저치균대우공생적원생결구매，구조매흡부갑완적능력경강。
The fundamental reason of coal adsorption difference is coal surface energy. In this paper, the effect which is from dynamic metamorphism on tectonic coal structure and components was analyzed. In the process of adsorption of methane, using methane adsorption isotherm experiments, we calculated the surface energy change of primary structure coal and tectonic coal at different temperatures, and causes of surface energy change of tectonic coal were analyzed from the perspective of dynamic metamorphism. The results show that the transformable effect which is from dynamic metamorphism on structure and components of tectonic coal is obvious, the micro pores structure of tectonic coal is more developed than symbiotic primary structure coal, and the tectonic coal has stronger adsorption capacity. The calculation results also show that, both the lower value of surface energy and ad-sorption methane capacity of tectonic coal are .larger than symbiotic primary structure coal with the increase of temperature and pressure.