Long-term thermal regimes of the Qinghai-Tibet Railway embankments in plateau permafrost regions (SCI)

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	Long-term thermal regimes of the Qinghai-Tibet Railway embankments in plateau permafrost regions (SCI)
	Niu F. J.; Liu M. H.; Cheng G. D.; Lin Z. J.; Luo J.; Yin G. A.
刊名	Science China-Earth Sciences
	2015
卷号	58 期号:9 页码:1669-1676
英文摘要	Ten years of ground temperature data (2003-2013) indicate that the long-term thermal regimes within embankments of the Qinghai-Tibet Railway (QTR) vary significantly with different embankment structures. Obvious asymmetries exist in the ground temperature fields within the traditional embankment (TE) and the crushed-rock basement embankment (CRBE). Measurements indicate that the TE and CRBE are not conducive to maintaining thermal stability. In contrast, the ground temperature fields of both the crushed-rock sloped embankment (CRSE) and the U-shaped crushed-rock embankment (UCRE) were symmetrical. However, the UCRE gave better thermal stability than the CRSE because slow warming of deep permafrost was observed under the CRSE. Therefore, the UCRE has the best long-term effect of decreasing ground temperature and improving the symmetry of the temperature field. More generally, it is concluded that construction using the cooling-roadbed principle meets the design requirements for long-term stability of the railway and for train transport speeds of 100 km h(-1). However, temperature differences between the two shoulders, which exist in all embankments shoulders, may cause potential uneven settlement and might require maintenance.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27354]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Niu F. J.,Liu M. H.,Cheng G. D.,et al. Long-term thermal regimes of the Qinghai-Tibet Railway embankments in plateau permafrost regions (SCI)[J]. Science China-Earth Sciences,2015,58(9):1669-1676.
APA	Niu F. J.,Liu M. H.,Cheng G. D.,Lin Z. J.,Luo J.,&Yin G. A..(2015).Long-term thermal regimes of the Qinghai-Tibet Railway embankments in plateau permafrost regions (SCI).Science China-Earth Sciences,58(9),1669-1676.
MLA	Niu F. J.,et al."Long-term thermal regimes of the Qinghai-Tibet Railway embankments in plateau permafrost regions (SCI)".Science China-Earth Sciences 58.9(2015):1669-1676.