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| DOI | 10.1016/j.applthermaleng.2018.04.063 |
| Numerical investigation on thermal insulation layer of a tunnel in seasonally frozen regions | |
| Ma Q.; Luo X.; Lai Y.; Niu F.; Gao J. | |
| 发表日期 | 2018 |
| ISSN | 13594311 |
| 卷号 | 138 |
| 英文摘要 | As an effective engineering measure, thermal insulation layer is used to prevent tunnel from frost heave damage in seasonally frozen regions. Two different methods are generally adopted to lay insulation layer. One is to lay the insulation layer between the preliminary lining and the secondary lining. The other is to lay the insulation layer on the surface of the secondary lining. But, there is no evidence to show which method is more useful. Meantime, the relationship between the insulation effect and thermal conductivity as well as thickness of insulation layer should be identified. To solve these problems, a numerical heat-moisture coupled model for the tunnel in a seasonally frozen region is established, which involves heat conduction, water migration and phase transition. And then, a representative tunnel in the Northwest of China is taken as an example to explore the heat-moisture state of the tunnel. Afterwards, the thermal insulation effect and the effect of location of thermal insulation layer on thermal state are analyzed. Subsequently, the methods on thermal conductivity and thickness of thermal insulation layer are constructed and the relationship among the insulation effect, thermal conductivity and thickness is obtained for heat insulation effect. © 2018 Elsevier Ltd |
| 英文关键词 | Heat-moisture coupled model; Seasonally frozen region; Thermal insulation; Tunnel |
| URL | https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85045761287&doi=10.1016%2fj.applthermaleng.2018.04.063&partnerID=40&md5=af46da8cf8a333e20ac413e580d5b7aa |
| 语种 | 英语 |
| scopus关键词 | Heat conduction; Linings; Moisture; Thermal conductivity; Thermal Engineering; Tunnels; Coupled modeling; Engineering measures; Insulation layers; Numerical investigations; Seasonally frozen region; Secondary lining; Thermal insulation layer; Water migration; Thermal insulation |
| 来源期刊 | Applied Thermal Engineering
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/77255 |
| 推荐引用方式 GB/T 7714 | Ma Q.； Luo X.； Lai Y.； Niu F.； Gao J.. Numerical investigation on thermal insulation layer of a tunnel in seasonally frozen regions[J]. 中国科学院西北生态环境资源研究院,2018,138. |
| APA | Ma Q.； Luo X.； Lai Y.； Niu F.； Gao J..(2018).Numerical investigation on thermal insulation layer of a tunnel in seasonally frozen regions.Applied Thermal Engineering,138. |
| MLA | Ma Q.； Luo X.； Lai Y.； Niu F.； Gao J.."Numerical investigation on thermal insulation layer of a tunnel in seasonally frozen regions".Applied Thermal Engineering 138(2018). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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