【摘要】 在分析现有煤孔径结构划分系统的基础上，根据我国１６个高煤级煤典型矿区５０件样品的孔隙测试数据，提出了适合于高煤级煤的孔隙结构自然分类方案。分类中从煤孔径结构自然分布特征的角度，将高煤级煤孔径划分为微孔（Ｄ＜１５ｎｍ）、过渡孔（Ｄ＝１５～５０ｎｍ）、中孔（Ｄ＝５０～４００ｎｍ）及大孔（Ｄ＞４００ｎｍ）４类。据此分类对我国高煤级煤孔隙性质的分布及演化规律进行了探讨。更多还原

【Abstract】 Based on the existing classification of coal pore structure and data of fifty samples from sixteen coal mine areas where typical high rank coals occured, a classification system of the pore structure suitable to high rank coal was proposed. Pore diameter of high rank coals falls into four categories:micropore (pore diameter<15 nm), transitional pore (diameter, 15～50 nm), mesopore(diameter, 50 ～400 nm) and macropore (diameter>400 nm) in the light of the natural distribution of the pore structure. On the basis of the classification, the evolution and distribution of properties of pore of the high rank coal in China were discussed.更多还原