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DOI	10.1016/j.coldregions.2012.01.014
	Cooling processes and effects of crushed rock embankment along the Qinghai-Tibet Railway in permafrost regions
	Mu, Yanhu; Ma, Wei; Wu, Qingbai; Sun, Zhizhong; Liu, Yongzhi
发表日期	2012
ISSN	0165-232X
EISSN	1872-7441
起始页码	107
结束页码	114
卷号	78
英文摘要	Crushed rock embankment (CRE) was most prevalent embankment structure with cooling measures along the Qinghai-Tibet Railway in permafrost regions. Ground temperature dataset from embankment construction (in 2002) to 2010 at nine monitoring sites along the railway were compiled to study long term cooling processes and cooling effects of CRE. Monitoring results indicated that the heat stored in filling materials could dissipate out in two cold seasons after embankment construction. Under cooling effect of CRE, permafrost tables beneath CRE moved upwards significantly during the first three years after embankment construction and then maintain almost constant. But underlying permafrost experienced different thermal process in relative warm and cold permafrost regions. In cold regions, underlying permafrost up to 14 m in depth experienced considerable cooling trends during the first five to sixth years after embankment construction. While in warm regions, the uppermost permafrost layer warmed after upwards movement of permafrost table, and underlying deep permafrost had no obvious cooling trends with time. Finally, differences in freezing and thawing seasons of, and differences in ground thermal regimes of cold and warm permafrost regions were investigated based on ground temperature from natural borehole. Then, the different cooling effects of CRE in two regions were interpreted based on these differences. (C) 2012 Elsevier B.V. All rights reserved.
英文关键词	Cooling processes and effects; Crushed rock embankment; Freezing and thawing seasons; Ground thermal regime; Permafrost regions
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	THERMAL REGIME
WOS记录号	WOS:000304291000011
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
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/240192
作者单位	[Mu, Yanhu; Ma, Wei; Wu, Qingbai; Sun, Zhizhong; Liu, Yongzhi] CAEERI CAS, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Mu, Yanhu,Ma, Wei,Wu, Qingbai,et al. Cooling processes and effects of crushed rock embankment along the Qinghai-Tibet Railway in permafrost regions[J]. 中国科学院西北生态环境资源研究院,2012,78.
APA	Mu, Yanhu,Ma, Wei,Wu, Qingbai,Sun, Zhizhong,&Liu, Yongzhi.(2012).Cooling processes and effects of crushed rock embankment along the Qinghai-Tibet Railway in permafrost regions.COLD REGIONS SCIENCE AND TECHNOLOGY,78.
MLA	Mu, Yanhu,et al."Cooling processes and effects of crushed rock embankment along the Qinghai-Tibet Railway in permafrost regions".COLD REGIONS SCIENCE AND TECHNOLOGY 78(2012).