周琦忠,钱静,彭一轩,黄澍晨,陈尚斌,汤志刚,罗跃,张凤鸣

• 1:江苏省地质局第五地质大队
• 2:中国矿业大学资源与地球科学学院
• 3:煤层气资源与成藏过程教育部重点实验室

摘要(Abstract)：

煤层孔隙结构与非均质性是影响吸附性能的重要因素。为揭示徐州三河尖煤矿煤层孔隙结构与非均质性对吸附性能的影响，通过X射线衍射、高压压汞、低温液氮吸附与低温二氧化碳吸附等实验手段，研究煤层孔隙结构与非均质性特征及其对吸附性能的影响。结果表明：(1)研究区煤样孔隙结构特征表现为微孔最发育，宏孔次之，介孔较差，微孔提供了绝大部分的总孔容和孔比表面积；(2)随孔径增加，孔隙非均质性呈现增强趋势，同一尺度孔隙的非均质性随埋深增加逐渐减弱；(3)孔隙结构的非均质性受微孔孔容和孔比表面积影响较大；碳酸盐矿物溶蚀和黄铁矿保护作用使煤层孔隙结构趋于简单，而黏土矿物促使煤层孔隙结构趋于复杂；(4)煤中微孔和介孔的发育程度和发育形态会影响煤储层吸附能力；黏土矿物因促进微孔及介孔发育而提高煤层吸附性能；碳酸盐矿物和黄铁矿等因占据煤层吸附点位而降低煤层吸附性能。

关键词(KeyWords)： 孔隙结构特征;分形维数;非均质性;吸附性能;三河尖煤矿

Abstract:

Keywords:

基金项目(Foundation): 江苏省自然资源保护利用专项资金(矿地融合试点)项目“三河尖煤矿特殊空间资源综合评价及协同开发利用”(苏财资环[2021]45号);; 江苏省地质学会2024年重点学术研究课题和学术交流方向资助项目(JSDZXH-P2024-01)

作者(Author): 周琦忠,钱静,彭一轩,黄澍晨,陈尚斌,汤志刚,罗跃,张凤鸣

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