不同变质类型煤的电子顺磁共振特征对比分析

现代地质 ›› 2009, Vol. 23 ›› Issue (3): 531-534.

不同变质类型煤的电子顺磁共振特征对比分析

李小明¹，曹代勇²

1中国矿业大学煤炭资源与安全开采国家重点实验室，北京100083；2华北科技学院安全工程中心，北京101601

收稿日期:2009-03-07 修回日期:2009-05-20 出版日期:2009-06-20 发布日期:2011-12-21
作者简介:李小明，男，高级工程师，博士后，1970年出生，地质工程专业，主要从事矿井地质的教学和研究工作。E-mail：lxm7010@126.com。
基金资助:
国家自然科学基金项目（40872105）；华北科技学院优秀人才科研启动基金项目（A08002）

Contrast Study on the EPR Characteristics of Coals of Different Metamorphism Types

LI Xiao-Meng¹， CAO Dai-Yong^-2

1State Key Laboratory of Coal Resources and Safe Exploitation, China University of Mining and Technology, Beijing100083，China；
2Safety Engineering Center, North China Institute of Science and Technology, Beijing101601，China

Received:2009-03-07 Revised:2009-05-20 Online:2009-06-20 Published:2011-12-21

摘要/Abstract

摘要：

通过对大别造山带前陆盆地石炭纪含煤岩系高煤级煤的电子顺磁共振分析，探讨了不同变质类型煤的芳香结构演化特征及其影响因素。结果表明高煤级煤的自由基浓度、线宽和兰德因子的演化具有较好的一致性，且随镜质体最大反射率的增大而呈规律性演化的趋势，构造应力作用促进和增强了环缩合作用和拼叠作用，有使煤超前演化的趋势。
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关键词: 大别造山带, 高煤级煤, 电子顺磁共振分析, 构造应力

Abstract:

Through electron paramagnetic resonance(EPR) analysis of high-rank coal samples from the Carboniferous coal located in the northern foreland basin of Dabie orogenic belt in the eastern China, the evolution characteristics of aromatic structures of coals of different metamorphism types and the effecting factors are studied. The result indicated that the evolution of the free radical density, the line width and the Lande factor demonstrates the good uniformity, and there is a regular tendency with the increasing of reflectance of vitrinite. The tectonic stress promotes and strengthens the aromatic ring polymerization and the aromatic layer superposition, and causes the tendency of leading evolution of coals.
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Key words: Dabie orogenic belt, high-rank coal, electron paramagnetic resonance, tectonic stress

中图分类号:

P618.11

李小明曹代勇. 不同变质类型煤的电子顺磁共振特征对比分析[J]. 现代地质, 2009, 23(3): 531-534.

LI Xiao-Meng CAO Dai-Yong. Contrast Study on the EPR Characteristics of Coals of Different Metamorphism Types[J]. Geoscience, 2009, 23(3): 531-534.

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