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[1]郭晓阳,刘一佳,邓存宝,等.煤系灰岩物化结构对瓦斯吸附特性的影响机制*[J].中国安全生产科学技术,2024,20(5):170-176.[doi:10.11731/j.issn.1673-193x.2024.05.023]
　GUO Xiaoyang,LIU Yijia,DENG Cunbao,et al.Influence mechanism of physicochemical structure on gas adsorption characteristics of coalfield limestone[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(5):170-176.[doi:10.11731/j.issn.1673-193x.2024.05.023]
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煤系灰岩物化结构对瓦斯吸附特性的影响机制*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
20
期数:
2024年5期
页码:
170-176
栏目:
职业安全卫生管理与技术
出版日期:
2024-05-31

文章信息/Info

Title:
Influence mechanism of physicochemical structure on gas adsorption characteristics of coalfield limestone
文章编号:
1673-193X(2024)-05-0170-07
作者:
郭晓阳; 刘一佳; 邓存宝; 徐家骅; 朱仔; 崔泽琛; 曹景夏; 宋留妮
（1.太原理工大学 安全与应急管理工程学院，山西 太原 030024；
2.华阳新材料科技集团有限公司博士后工作站，山西 阳泉 045000）
Author(s):
GUO Xiaoyang;  LIU Yijia;  DENG Cunbao;  XU Jiahua;  ZHU Zai;  CUI Zechen;  CAO Jingxia;  SONG Liuni
(1.School of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan Shanxi 030024,China;
2.Postdoctoral Workstation,Huayang New Material Technology Group Co.,Ltd.,Yangquan Shanxi 045000,China)
关键词:
煤系灰岩; 瓦斯吸附特性; 微观孔隙; 量子化学; 分子结构
Keywords:
coalfield limestone;  gas adsorption characteristics;  microscopic pore;  quantum chemistry;  molecular structure
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2024.05.023
文献标志码:
A
摘要:
为阐明分子结构和微观孔隙对煤系灰岩瓦斯吸附的影响机制，综合采用元素分析、化学检测、孔径分析、CT测试、瓦斯吸附实验和量子化学计算等方法表征灰岩物化特性，构建并优化分子结构，研究瓦斯吸附性能。研究结果表明：煤系灰岩含有较多C元素、有机官能团和有序芳香层，有机物石墨化程度高、晶体大、缺陷少，是其吸附瓦斯的化学基础；降低环境温度、增加吸附压力或减少含水率均能削弱灰岩吸附瓦斯的CH4/CO2竞争态势；灰岩含大量连通性好、结构复杂的吸附孔，孔隙系统更紧凑且各向异性更弱，是其吸附瓦斯的物理基础。研究结果可为煤岩体系瓦斯防治提供理论依据。
Abstract:
In order to clarify the influence mechanism of molecular structure and microscopic pores on the gas adsorption of coalfield limestone,the methods of elemental analysis,chemical detection,aperture analysis,CT testing,gas adsorption experiments and quantum chemical calculation were comprehensively used to characterize the physicochemical characteristics of limestone.The molecular structure was constructed and optimized,and the gas adsorption properties were studied.The results show that the coalfield limestone contains more C elements,organic functional groups and ordered aromatic layer,and the organic matter has high degree of graphitization,large crystal and less defects,which are the chemical basis of gas adsorption.Reducing the ambient temperature,increasing the adsorption pressure or reducing the moisture content can weaken the CH4/CO2 competition of gas adsorption of limestone.The limestone contains a lot of adsorption pores with good connectivity and complex structure,and the pore system is more compact and the anisotropy is weaker,which are the physical basis of gas adsorption.The research results can provide theoretical basis for gas control in coal rock system.

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备注/Memo

备注/Memo:
收稿日期： 2023-12-27
* 基金项目： 国家自然科学基金青年科学基金项目（52204231）；山西省基础研究计划项目(20210302124483)；山西省高等学校科技创新项目(2021L052)
作者简介： 郭晓阳，博士，讲师，主要研究方向为煤矿瓦斯灾害防治。
通信作者： 刘一佳，硕士研究生，主要研究方向为煤矿瓦斯灾害防治。
更新日期/Last Update: 2024-05-30