Thermal-moisture Dynamics of Railway Embankment in Permafrost Regions

doi:10.3969/j.issn.1001-8360.2017.10.017

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	Thermal-moisture Dynamics of Railway Embankment in Permafrost Regions
	Zhang, Mingli 1,2; Wen, Zhi 2; Xue, Ke 2; Fan, Shufang 3; Gao, Qiang 2
刊名	Tiedao Xuebao/Journal of the China Railway Society
	2017-10-15
卷号	39 期号:10 页码:126-133
关键词	Ballast (railroad track) Dynamics Embankments Freezing Gravel Heat flux Infiltration Permafrost Railroads Rain Soil testing Field monitoring Moisture accumulation Moisture dynamics Railway subgrade Rainfall infiltration
ISSN号	10018360
DOI	10.3969/j.issn.1001-8360.2017.10.017
英文摘要	In order to study the thermal-moisture dynamics of railway embankment in cold regions, the moisture, precipitation, temperature and heat flux data within embankments were extensively measured at ballast covered roadbed, ballastless gravel roadbed and natural ground in the embankment test section of Beiluhe permafrost region. Based on the observed data, the features of soil thermal-moisture migration, moisture accumulation and the effects of rainfall on the active layer of the embankment were analyzed. The results indicate that the temperatures in the active layer of the embankment varies sinusoidally with time. The ballast layer can effectively prevent the external heat flux reaching internal embankment and keeps a lower annual average value and annual range of temperature than the gravel roadbed. Water migrated towards the freezing front during the freezing process. Liquid water and rainfall infiltrate into the permafrost table during the thawing period. Heavy and sustained rainfall events have significant effects on short-term thermal-moisture dynamics in shallow subgrade( © 2017, Editorial Office of Journal of the China Railway Society. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114942]
专题	土木工程学院
作者单位	1.College of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou; 730000, China; 3.School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou; 730000, China
推荐引用方式 GB/T 7714	Zhang, Mingli,Wen, Zhi,Xue, Ke,et al. Thermal-moisture Dynamics of Railway Embankment in Permafrost Regions[J]. Tiedao Xuebao/Journal of the China Railway Society,2017,39(10):126-133.
APA	Zhang, Mingli,Wen, Zhi,Xue, Ke,Fan, Shufang,&Gao, Qiang.(2017).Thermal-moisture Dynamics of Railway Embankment in Permafrost Regions.Tiedao Xuebao/Journal of the China Railway Society,39(10),126-133.
MLA	Zhang, Mingli,et al."Thermal-moisture Dynamics of Railway Embankment in Permafrost Regions".Tiedao Xuebao/Journal of the China Railway Society 39.10(2017):126-133.