邹冠贵,范凤,汤小明,曾葫

• 1:中国矿业大学(北京)地球科学与测绘工程学院
• 2:中国矿业大学(北京)煤炭资源与安全开采国家重点实验室
• 3:广东华路交通科技有限公司

摘要(Abstract)：

以寺河矿3~#煤层为研究对象,开展煤的工业分析、高压等温吸附试验和超声速度测试等工作。通过分析煤的物质组成、煤的弹性参数和煤的甲烷吸附能力三者之间的关系,研究煤的弹性参数与甲烷吸附能力的关系。结果表明:(1)煤的甲烷吸附能力与煤的波阻抗、弹性模量(体积模量K、剪切模量μ、杨氏模量E)、纵横波速度和体密度呈负相关关系:即煤岩强度越弱,煤岩的兰氏体积越大,甲烷吸附能力越强;杨氏模量、剪切模量和纵波阻抗与兰氏体积的相关性依次升高。(2)煤的弹性参数与煤对甲烷吸附能力存在负相关关系的内在控制机理是:煤中孔隙度越大、煤的矿物越少、有机质越多,对应着更低的弹性强度,也对应着更大的兰氏体积,即更大的吸附能力。其中,煤的物质组成作为煤层甲烷的直接吸附场所,同时也是连接煤岩弹性参数与煤岩甲烷吸附能力的桥梁。研究成果可以为煤层气有利富集区预测提供岩石物理指导。

关键词(KeyWords)： 煤的物质组成;弹性参数;吸附能力;控制机理

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(41402143);; 国家重点研发计划课题资助项目(2016YFC0501102);; 国家科技重大专项课题资助项目(2016ZX05066-001);; 国家自然基金煤炭联合资助项目(U1261203);; 山西自然基金资助项目(2013012001)

作者(Author): 邹冠贵,范凤,汤小明,曾葫

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