Optimal design of thermal insulation layer of a tunnel in permafrost regions based on coupled heat-water simulation
文献类型：期刊论文
| 作者 | Li, Shuangyang; Niu, Fujun; Lai, Yuanming; Pei, Wansheng; Yu, Wenbing |
| 刊名 | APPLIED THERMAL ENGINEERING
 |
| 出版日期 | 2017-01-05 |
| 卷号 | 110页码:1264-1273 |
| 关键词 | Permafrost region Tunnel Thermal insulation Optimal design Coupled heat-water model |
| ISSN号 | 1359-4311 |
| DOI | 10.1016/j.applthermaleng.2016.09.033 |
| 通讯作者 | Li, Shuangyang(Lisy@lzb.ac.cn) |
| 英文摘要 | In permafrost regions, if thermal insulation layer is thinner, seasonal freeze-thaw action can induce severe damages on a tunnel structure; otherwise, the construction cost is high and not economical. To find out a scientific balance between the safety and the economy of the tunnel in permafrost regions, an optimal design on the thermal insulation layer should be carried out according to some relevant numerical or analytical calculations. To solve this problem, a coupled heat-water model for the tunnel in cold regions is built on the basis of energy and mass conservation principles. Then a representative permafrost tunnel in the Qinghai-Tibet Plateau (QTP) is used as an example to simulate temperature and water processes of the surrounding permafrost, and thereby a key position and an unfavorable time are picked out for the optimal design. Subsequently, the optimal thickness of the thermal insulation layer for the permafrost tunnel is determined by a series of coupled heat-water simulations. Eventually, the temperature and water states of the surrounding permafrost of the tunnel at the unfavorable time are fully evaluated to make sure that the tunnel is free of freeze-thaw damages. This study is expected to better understand the coupled temperature and water processes in the surrounding permafrost of the tunnel and further design a safe and economical tunnel structure. Of course, it can serve as a reference for further investigation, too. (C) 2016 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | SURROUNDING ROCK ; NONLINEAR-ANALYSIS ; FORECAST ANALYSIS ; TIBET RAILWAY ; COLD REGIONS ; AIR-FLOW ; FROZEN ; EMBANKMENT ; STABILITY ; DAMAGE |
| 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:000388775600126 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557512 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, Shuangyang |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Shuangyang,Niu, Fujun,Lai, Yuanming,et al. Optimal design of thermal insulation layer of a tunnel in permafrost regions based on coupled heat-water simulation[J]. APPLIED THERMAL ENGINEERING,2017,110:1264-1273. |
| APA | Li, Shuangyang,Niu, Fujun,Lai, Yuanming,Pei, Wansheng,&Yu, Wenbing.(2017).Optimal design of thermal insulation layer of a tunnel in permafrost regions based on coupled heat-water simulation.APPLIED THERMAL ENGINEERING,110,1264-1273. |
| MLA | Li, Shuangyang,et al."Optimal design of thermal insulation layer of a tunnel in permafrost regions based on coupled heat-water simulation".APPLIED THERMAL ENGINEERING 110(2017):1264-1273. |
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来源：寒区旱区环境与工程研究所
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