气候变化领域集成服务门户(CCPortal): Thermal Interaction between Permafrost and the Qinghai-Tibet Railway

CCPortal

DOI	10.1061/(ASCE)CR.1943-5495.0000016
	Thermal Interaction between Permafrost and the Qinghai-Tibet Railway
	Wu, Qingbai; Li, Mingyong; Liu, Yongzhi
发表日期	2010
ISSN	0887-381X
EISSN	1943-5495
起始页码	112
结束页码	125
卷号	24 期号:4
英文摘要	Measures were taken to protect the thermal regime of the roadbed embankment after construction and to lower permafrost temperatures in the rich-ice and warm permafrost regions along the Qinghai-Xizang Railway. However, these measures were taken only for some sections of the railway, leaving many sections unprotected. This article addresses those areas where no measures were taken and presents analysis of the variation of soil temperatures under the embankment in seasonal frozen soil areas, degrading permafrost areas, and warm and cold permafrost areas. The results show that soil temperatures, maximum seasonal freezing depth, and the permafrost table under the embankment differ according to the different frozen soil areas after embankment construction. In seasonal frozen soil areas and degraded permafrost areas, the seasonal frost layer remained frozen the next year under the shaded shoulder of the embankment. In degrading permafrost areas, a thaw layer between the permafrost table and the bottom of the seasonal frost formed under the embankment. In warm permafrost areas, the permafrost table under the embankment was unstable and soil temperatures near the permafrost table showed an obvious increasing trend. In cold permafrost areas, the permafrost table under the embankment was clearly raised and temperature lowered in the soil near the permafrost table, which is advantageous to permafrost thermal stability under the embankment. In particular, the difference in solar radiation from the slope exposed to the sun to the shady slope of the embankment is responsible for the difference in the soil thermal regime and the permafrost table, which potentially can affect roadbed stability.
英文关键词	Qinghai-Xizang Railway; General embankment; Variation of permafrost; Thermal interaction
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	EMBANKMENT
WOS记录号	WOS:000284273900002
来源期刊	JOURNAL OF COLD REGIONS ENGINEERING
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/240219
作者单位	[Wu, Qingbai; Li, Mingyong; Liu, Yongzhi] Chinese Acad Sci, State Key Lab Frozen Soil Engn Cold & Arid Reg, Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wu, Qingbai,Li, Mingyong,Liu, Yongzhi. Thermal Interaction between Permafrost and the Qinghai-Tibet Railway[J]. 中国科学院西北生态环境资源研究院,2010,24(4).
APA	Wu, Qingbai,Li, Mingyong,&Liu, Yongzhi.(2010).Thermal Interaction between Permafrost and the Qinghai-Tibet Railway.JOURNAL OF COLD REGIONS ENGINEERING,24(4).
MLA	Wu, Qingbai,et al."Thermal Interaction between Permafrost and the Qinghai-Tibet Railway".JOURNAL OF COLD REGIONS ENGINEERING 24.4(2010).