气候变化领域集成服务门户(CCPortal): Evaluation of damage probability of railway embankments in permafrost regions in Qinghai-Tibet Plateau

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DOI	10.1016/j.enggeo.2021.106027
	Evaluation of damage probability of railway embankments in permafrost regions in Qinghai-Tibet Plateau
	Zhang, Saize; Niu, Fujun; Wang, Jinchang; Dong, Tianchun
通讯作者	Niu, FJ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0013-7952
EISSN	1872-6917
卷号	284
英文摘要	The Qinghai-Tibet Railway (QTR) has been operating since 2006. It crosses continuous permafrost regions in the Qinghai-Tibet Plateau. Half of these regions are characterized by high ground temperature and ice content, and slight changes in the permafrost may cause embankment damage. In this study, the deformed embankment data of the QTR collected from 2010 to 2018 were analyzed. The analysis results showed that the total length of deformed embankments of the QTR in the permafrost regions was 22.97 km, and the damage rate since its completion in 2006 was approximately 5.4%. The results also indicated that the embankments stabilized over time. In 2010, the deformed embankments that were reinforced consisted of 26 sites and were 7.64-km long, whereas in 2018, only a 0.48-km long site was reinforced. In this study, a damage probability model of the embankments is developed. The damage probability of the embankments along the QTR in permafrost regions was classified into five grades: slight, low, moderate, high, and extremely-high damage probability levels. The total lengths of embankment sections with slight, low, moderate, high, and extremely-high levels of damage probability are 190.38, 161.42, 61.72, 13.51, and 2.99 km, respectively. It is suggested that damage-free embankment sections with high and extremely-high levels of damage probability should be monitored more closely during railway embankment maintenance. This study provides a reference for the application of the logistic regression model to establish the damage probability model of railway embankments in permafrost regions.
关键词	ROADBED COOLING APPROACH ICE-RICH PERMAFROST FROZEN SOIL STABILITY TEMPERATURE SIMULATION HIGHWAY PILE
英文关键词	Qinghai-Tibet railway; Permafrost degradation; Embankment deformation; Damage probability
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000636054700009
来源期刊	ENGINEERING GEOLOGY
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/254384
作者单位	[Zhang, Saize; Niu, Fujun] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Zhang, Saize] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wang, Jinchang; Dong, Tianchun] China Railway Qinghai Tibet Grp Co Ltd, Xining 810000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Saize,Niu, Fujun,Wang, Jinchang,et al. Evaluation of damage probability of railway embankments in permafrost regions in Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2021,284.
APA	Zhang, Saize,Niu, Fujun,Wang, Jinchang,&Dong, Tianchun.(2021).Evaluation of damage probability of railway embankments in permafrost regions in Qinghai-Tibet Plateau.ENGINEERING GEOLOGY,284.
MLA	Zhang, Saize,et al."Evaluation of damage probability of railway embankments in permafrost regions in Qinghai-Tibet Plateau".ENGINEERING GEOLOGY 284(2021).