Applicability evaluation on application of thermosyphon in embankment engineering of expressway in permafrost regions of Qinghai-Tibet Plateau

被引：5
|
作者：
Kong S. [1 ,2 ]
Wen Z. [1 ]
Wu Q. [1 ]
Wang D. [1 ]
机构：
[1] State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou
[2] School of Earth Science, University of Chinese Academy of Sciences, Beijing
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Annual average temperature; Annual difference; Cooling effect; Embankment height; Thermosyphon;
D O I：
10.11817/j.issn.1672-7207.2019.06.017
中图分类号：
学科分类号：
摘要：
In order to study the cooling effect and the application range of thermosyphon in embankment engineering of expressway in permafrost regions, a hydrothermal model was established, in which the artificial permafrost table and thermal stability status of the embankment with thermosyphon under the different environmental conditions were analyzed. And the application scope of thermosyphon was analyzed by combining the three factors of road height, annual average temperature and annual difference. The results show that for the area with annual difference of 12 ℃, the application scope of embankment with the height of 4 m is the annual average temperature lower than about -5.5 ℃, and the application scope of embankment with the height of 3 m is the annual average temperature lower than about -5.8 ℃. The embankment with thermosyphon has certain limitations and can't maintain the stability of the engineering during its service period of 15 a in most of Qinghai-Tibet Plateau area, but the thermosyphon embankment with the height of 3 m can be applied in the area of Fenghuoshan. © 2019, Central South University Press. All right reserved.
引用
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页码：1384 / 1391
页数：7
相关论文
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