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Advances in Materials Science and Engineering
Volume 2015, Article ID 182437, 8 pages
Research Article

Cooling Effect of Crushed Rock-Based Embankment along the Chaidaer-Muli Railway

1State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou 730000, China
2College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
3Qinghai Research Institute of Transportation Science and Technology, Xining 810000, China
4China Railway First Survey & Design Institute Group Co., Ltd., Xi’an 710043, China

Received 1 May 2015; Revised 20 July 2015; Accepted 28 July 2015

Academic Editor: Bert Blocken

Copyright © 2015 Ji Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper presents an experimental study of the cooling effect of crushed rock-based embankment on slope wetlands along the Chaidaer-Muli Railway. The result shows that only the embankment shady side can be effectively cooled down in a warm permafrost region and the crushed rock-based embankment can cool the entire embankment in a cold permafrost region. The crushed rock-based embankment cannot eliminate the problems from the south-north slope. Slope wetland can influence the temperature field of the crushed rock-based embankment. On the uphill side, it will lead to degradation in some cases and development of permafrost in other cases, which depends on the topsoil water content and ground surface runoff. On the downhill side, it always leads to the warming of permafrost. For crushed rock-based embankment constructed on slope wetlands, it is necessary to adopt other stronger measures to eliminate the sunny-shady slope problems.