气候变化领域集成服务门户(CCPortal): Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment

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DOI	10.1139/T2012-058
	Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment
	Ma, Wei; Wen, Zhi; Sheng, Yu; Wu, Qingbai; Wang, Dayan; Feng, Wenjie
发表日期	2012
ISSN	0008-3674
EISSN	1208-6010
起始页码	1005
结束页码	1014
卷号	49 期号:9
英文摘要	Due to the special engineering geology characteristics of permafrost, construction in permafrost regions tends to result in serious permafrost-related engineering problems. Thaw settlement induced by permafrost degradation is the principal challenge for railway construction on the Qinghai-Tibetan Plateau. It threatens the stability and safety of the railway system, especially in warm and ice-rich permafrost regions. Thaw settlement in section DK1139+780 along the Qinghai-Tibetan railway is a potential risk to the safety of the railway, and a combination of closed thermosyphons and crushed rock revetment was used to remedy permafrost warming and thaw settlement of the embankment. Based on ground temperatures and embankment deformations observed at this site since 2002, the effects of the remedial measures were evaluated. The results show that the remedial measures lowered the ground temperature and raised the permafrost table. The crushed rock slope protection acted as an insulation layer and reduced heat flux into the embankment. The thermosyphons lowered the permafrost temperature and had a good cooling effect on the underlying permafrost. The results show that the remedial measures using two-phase thermosyphons and crushed rock revetment decreased the settlement of the embankment and improved the stability of the railway system.
英文关键词	permafrost; thaw settlement; thermosyphon; crushed rock revetment; Qinghai-Tibetan railway
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS关键词	QINGHAI-TIBET RAILWAY ; FROZEN SOIL ; PROTECTION ; BEHAVIOR
WOS记录号	WOS:000308161200001
来源期刊	CANADIAN GEOTECHNICAL JOURNAL
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/240209
作者单位	[Ma, Wei; Wen, Zhi; Sheng, Yu; Wu, Qingbai; Wang, Dayan; Feng, Wenjie] Chinese Acad Sci, State Key Lab Frozen Soil Engn, CAREERI, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Ma, Wei,Wen, Zhi,Sheng, Yu,et al. Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment[J]. 中国科学院西北生态环境资源研究院,2012,49(9).
APA	Ma, Wei,Wen, Zhi,Sheng, Yu,Wu, Qingbai,Wang, Dayan,&Feng, Wenjie.(2012).Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment.CANADIAN GEOTECHNICAL JOURNAL,49(9).
MLA	Ma, Wei,et al."Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment".CANADIAN GEOTECHNICAL JOURNAL 49.9(2012).