Numerical evaluation for protecting and reinforcing effect of a new designed crushed rock revetment on Qinghai–Tibet Railway

doi:10.1016/j.renene.2020.04.066

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Numerical evaluation for protecting and reinforcing effect of a new designed crushed rock revetment on Qinghai–Tibet Railway
	Yandong, Hou 2; Qingbai, Wu 1,3; Kaige, Wang 2; Zeguo, Ye 2
刊名	Renewable Energy
	2020-08-01
卷号	156 页码:645-654
关键词	Cooling Embankments Energy utilization Global warming Heat convection Mass transfer Revetments Crushed rock revetment Embankment construction Heat and mass transfer models Higher efficiency Permafrost region Reinforcing effects Synthetic reactions Warm permafrost
ISSN号	09601481
DOI	10.1016/j.renene.2020.04.066
英文摘要	Crushed rock revetment (CRR) has been widely implemented to mitigate the geothermal disturbance from the embankment construction and global warming. The cooling effect and air convective mode of the traditional CRR (TCRR) and a new designed solar−shading CRR (SSCRR) were comparatively studied based on a developed and verified heat and mass transfer model. The results indicate that TCRR used as a protecting measure cannot eliminate the geothermal disturbance in warm permafrost regions, but can preserve the permafrost foundation in cold permafrost regions, while SSCRR can further cool the permafrost foundation. If TCRR is added to reinforce a 10 years operated general embankment, it can only grudgingly keep the thermal disturbed state for about 35 years and 45 years in warm and cold permafrost regions, respectively. SSCRR, by contrast, can refrigerate the operation–disturbed permafrost foundation. Wind−forced dominated convection for TCRR in warm season dissipates the ‘cold energy’ accumulated in cold season, however, synthetic reaction for SSCRR with a longer and higher efficiency cooling process in cold season and better heat insulating effect in warm season conducts a superior cooling effect. These results provide a basis for the optimization of cold energy utilization systems for the embankments in the degenerating permafrost regions. © 2020 Elsevier Ltd
WOS研究方向	Science & Technology - Other Topics ; Energy & Fuels
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000540378500054
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151002]
专题	土木工程学院
作者单位	1.State Key Laboratory of Frozen Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou; 730000, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Beiluhe Observation Station of Frozen Soil Environment and Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou; 730000, China
推荐引用方式 GB/T 7714	Yandong, Hou,Qingbai, Wu,Kaige, Wang,et al. Numerical evaluation for protecting and reinforcing effect of a new designed crushed rock revetment on Qinghai–Tibet Railway[J]. Renewable Energy,2020,156:645-654.
APA	Yandong, Hou,Qingbai, Wu,Kaige, Wang,&Zeguo, Ye.(2020).Numerical evaluation for protecting and reinforcing effect of a new designed crushed rock revetment on Qinghai–Tibet Railway.Renewable Energy,156,645-654.
MLA	Yandong, Hou,et al."Numerical evaluation for protecting and reinforcing effect of a new designed crushed rock revetment on Qinghai–Tibet Railway".Renewable Energy 156(2020):645-654.