Evolution of coal self-heating processes in longwall gob areas
文献类型：期刊论文
| 作者 | Xia, Tongqiang1,2,4; Wang, Xinxin1; Zhou, Fubao1,3; Kang, Jianhong1; Liu, Jishan5; Gao, Feng4 |
| 刊名 | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
 |
| 出版日期 | 2015 |
| 卷号 | 86页码:861-868 |
| 关键词 | Self-heating Longwall face advance Thermal non-equilibrium Gob area Mine fires |
| ISSN号 | 0017-9310 |
| DOI | 10.1016/j.ijheatmasstransfer.2015.03.072 |
| 英文摘要 | Understanding the evolution of coal self-heating in longwall mining gob areas is important for the mitigation of underground mine fires. The coal self-heating involves a chain of complex interactions between compositional gas and solid coal. These interactions are normally regulated by the dynamic gob configuration due to the extraction of coal. In this study, a fully coupled transient model of compositional gas flow and transport, and the heat transfer between solid coal and gas is developed to quantify the evolution of coal self-heating processes under the in-situ gob configuration. The modelled results were matched reasonably well with the field measurements of air temperatures and oxygen concentrations for a Chinese coal mine. The verified model was applied to conduct sensitivity studies of (1) ventilation flux; (2) ventilation resistance; and (3) advance rate of face. The main results of the sensitivity study reveal that (i) the high temperature zones are mainly distributed near the intake airway of gob; (ii) the higher ventilation flux or ventilation resistance leads to the higher self-heating temperature and the larger oxidation self-heating zone. Moreover, the self-heating zone migrates towards the much deeper gob area. Whereas, the higher advance rate of face results in the lower self-heating temperature and smaller self-heating zone. The simulated results can provide some suggestions for the prevention of coal spontaneous combustion in gobs. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Thermodynamics ; Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000355029900084 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3733]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.China Univ Min & Technol, Key Lab Gas & Fire Control Coal Mines ; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.China Univ Min & Technol, State Key Lab Coal Resources & Safe Min ; 4.China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn ; 5.Univ Western Australia, Sch Mech & Chem Engn |
| 推荐引用方式 GB/T 7714 | Xia, Tongqiang,Wang, Xinxin,Zhou, Fubao,et al. Evolution of coal self-heating processes in longwall gob areas[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2015,86:861-868. |
| APA | Xia, Tongqiang,Wang, Xinxin,Zhou, Fubao,Kang, Jianhong,Liu, Jishan,&Gao, Feng.(2015).Evolution of coal self-heating processes in longwall gob areas.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,86,861-868. |
| MLA | Xia, Tongqiang,et al."Evolution of coal self-heating processes in longwall gob areas".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 86(2015):861-868. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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