Evaluation of cooling effects of crushed rock under sand-filling and climate warming scenarios on the Tibet Plateau
文献类型：期刊论文
| 作者 | Yu, Wenbing1; Liu, Weibo1,2; Chen, Lin1,3; Yi, Xin1,2; Han, Fenglei1,2; Hu, Da1,2 |
| 刊名 | APPLIED THERMAL ENGINEERING
 |
| 出版日期 | 2016-01-05 |
| 卷号 | 92页码:130-136 |
| 关键词 | Crushed-rock Natural convection Permafrost engineering Aeolian sand Climate warming |
| ISSN号 | 1359-4311 |
| DOI | 10.1016/j.applthermaleng.2015.09.030 |
| 通讯作者 | Liu, Weibo(liuweibo980@163.com) |
| 英文摘要 | Crushed rock has been applied to cool the permafrost foundation on the Tibet Plateau. It is facing the challenges of sand-filling and climate warming. Desertification and climate warming are a definite trend on the Tibet Plateau, which has affected the permafrost and infrastructures. This study investigated the influence of sand-filling and climate warming on the cooling effect of crushed rock on the Tibet Plateau, on the basis of a coupled finite element model of convective heat transfer and heat conduction with phase change. The model is calibrated by field measurements. The field experiment and numerical simulation reveal that natural convection in rock layer only occurs in winter season. With the increasing thickness of sand in rock layer, the critical temperature difference between the sand-free layer increases, and the Ra number decreases, and the natural convection intensity weakens gradually. At the climate warming rate of 0.052 degrees C a(-1), the cooling effect of rock layer can counteract the negative effect of climate warming and raise the permafrost table for about the former 20 years. However, the permafrost will eventually degrade continuously, which means the crushed-rock can't be applied to maintain the permafrost foundation stability anymore under these conditions. (C) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | EMBANKMENTS ; REGIONS |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics |
| WOS类目 | Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000367861700015 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557136 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Liu, Weibo |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Montreal, Dept Geog, Montreal, PQ H2V 2B8, Canada |
| 推荐引用方式 GB/T 7714 | Yu, Wenbing,Liu, Weibo,Chen, Lin,et al. Evaluation of cooling effects of crushed rock under sand-filling and climate warming scenarios on the Tibet Plateau[J]. APPLIED THERMAL ENGINEERING,2016,92:130-136. |
| APA | Yu, Wenbing,Liu, Weibo,Chen, Lin,Yi, Xin,Han, Fenglei,&Hu, Da.(2016).Evaluation of cooling effects of crushed rock under sand-filling and climate warming scenarios on the Tibet Plateau.APPLIED THERMAL ENGINEERING,92,130-136. |
| MLA | Yu, Wenbing,et al."Evaluation of cooling effects of crushed rock under sand-filling and climate warming scenarios on the Tibet Plateau".APPLIED THERMAL ENGINEERING 92(2016):130-136. |
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来源：寒区旱区环境与工程研究所
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