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DOI	10.1016/j.coldregions.2015.03.013
	Experimental and numerical investigations on frost damage mechanism of a canal in cold regions
	Li, Shuangyang; Zhang, Mingyi; Tian, Yibin; Pei, Wansheng; Zhong, Hua
发表日期	2015
ISSN	0165-232X
EISSN	1872-7441
起始页码	1
结束页码	11
卷号	116
英文摘要	Frost action is a prevailing and heavy damage to canals in cold regions, and it involves complicated heat and mass transfer as well as frost deformation in the seasonal freeze-thaw ground. To explore the frost damage mechanisms of canals in cold regions, firstly, a numerical water-heat-mechanics model is set up and corresponding computer program is developed. Secondly, a model test on a canal is carried out in one freezing-thawing cycle. Then, the canal model is simulated to analyze its temperature, water and mechanical states during the freezing-thawing process. The results show that under the drive of temperature, the total water contents in freezing-thawing fronts are very high and even a part of the freezing front is filled with ice and unfrozen water, which causes high tensile stress and heavy frost heave. In particular, the deformations at the toe of the canal slope are much larger than those in other zones. Therefore, this zone should be monitored closely to ensure safe operation. As a preliminary study, the experimental and numerical model and results in this study may be a reference for design, maintenance and research on other canals in cold regions. (C) 2015 Elsevier B.V. All rights reserved.
英文关键词	Canal; Cold region; Frozen soil; Frost heave; Coupled water-heat-mechanics model
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	HIGH CONFINING PRESSURES ; FROZEN SOIL ; COUPLED HEAT ; UNSATURATED SOILS ; TIBET RAILWAY ; MASS-TRANSFER ; FREEZE-THAW ; MODEL ; EMBANKMENT ; PERMAFROST
WOS记录号	WOS:000356122800001
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
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/240142
作者单位	[Li, Shuangyang; Zhang, Mingyi] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Tian, Yibin; Pei, Wansheng] Northwest Res Inst Co Ltd, CREC, Lanzhou 730000, Gansu, Peoples R China; [Zhong, Hua] Heilongjiang Prov Hydraul Res Inst, Harbin 150080, Heilongjiang, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuangyang,Zhang, Mingyi,Tian, Yibin,et al. Experimental and numerical investigations on frost damage mechanism of a canal in cold regions[J]. 中国科学院西北生态环境资源研究院,2015,116.
APA	Li, Shuangyang,Zhang, Mingyi,Tian, Yibin,Pei, Wansheng,&Zhong, Hua.(2015).Experimental and numerical investigations on frost damage mechanism of a canal in cold regions.COLD REGIONS SCIENCE AND TECHNOLOGY,116.
MLA	Li, Shuangyang,et al."Experimental and numerical investigations on frost damage mechanism of a canal in cold regions".COLD REGIONS SCIENCE AND TECHNOLOGY 116(2015).