A Mechanical Model and Numerical Method for Gas Seepage Analysis Considering Gas Desorption in Heterogeneous Coal
文献类型：期刊论文
| 作者 | Hao, Zhong2; Jian, Kailin1,2; Peng, Shoujian1; Xu, Jiang1; Xu, Linquan3 |
| 刊名 | NATURAL RESOURCES RESEARCH
 |
| 出版日期 | 2022-05-11 |
| 页码 | 16 |
| 关键词 | Coal and gas outburst Gas seepage and desorption Heterogeneous coal Finite volume method Gas state variation and distribution |
| ISSN号 | 1520-7439 |
| DOI | 10.1007/s11053-022-10063-6 |
| 通讯作者 | Jian, Kailin(cqjian@cqu.edu.cn) |
| 英文摘要 | The primary purpose of this paper is to research the law of gas seepage considering gas desorption in heterogeneous coal theoretically. A mechanical model on gas seepage considering gas desorption in heterogeneous coal is established, and the governing equation of gas seepage is discretized by the finite volume method with a new meshing strategy. Moreover, the gas state distribution and change in coal with different heterogeneity are calculated. The numerical results show that the effects of coal heterogeneity on gas seepage and desorption are significant. The coal with high heterogeneity is not accessible for gas to seep in it, resulting in a great gas pressure gradient, which is necessary for an outburst initiation. Additionally, the gas pressure gradient in the coal with high heterogeneity decreases more slowly than that with low heterogeneity. Hence, the possibility of outburst initiation is greater, and the outburst duration may be longer if the coal has high heterogeneity. Due to the strong randomness of the distribution and change of gas velocity in heterogeneous coal, the coal and gas outbursts in the field may be far more complex than that induced in the laboratory by using briquette, which is close to a homogeneous porous medium. |
| 资助项目 | State Key Laboratory of Coal Mine Disaster Dynamics and Control[2011DA105287-ZD201603] ; Basic and Frontier Research Projects of Chongqing[cstc2016jcyjA0117] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ248825] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000792995100001 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/15900]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Jian, Kailin |
| 作者单位 | 1.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, 174 Shazhengjie, Chongqing 400044, Peoples R China 2.Chongqing Univ, Aerosp & Engn Coll, 174 Shazhengjie, Chongqing 400044, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hao, Zhong,Jian, Kailin,Peng, Shoujian,et al. A Mechanical Model and Numerical Method for Gas Seepage Analysis Considering Gas Desorption in Heterogeneous Coal[J]. NATURAL RESOURCES RESEARCH,2022:16. |
| APA | Hao, Zhong,Jian, Kailin,Peng, Shoujian,Xu, Jiang,&Xu, Linquan.(2022).A Mechanical Model and Numerical Method for Gas Seepage Analysis Considering Gas Desorption in Heterogeneous Coal.NATURAL RESOURCES RESEARCH,16. |
| MLA | Hao, Zhong,et al."A Mechanical Model and Numerical Method for Gas Seepage Analysis Considering Gas Desorption in Heterogeneous Coal".NATURAL RESOURCES RESEARCH (2022):16. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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