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DOI	10.1016/j.coldregions.2020.103197
	The coupled moisture-heat process of a water-conveyance tunnel constructed by artificial ground freezing method
	Li, Ming; Ma, Qinguo; Luo, Xiaoxiao; Jiang, Haiqiang; Li, Yongdong
通讯作者	Ma, QG (通讯作者)，South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510641, Guangdong, Peoples R China.
发表日期	2021
ISSN	0165-232X
EISSN	1872-7441
卷号	182
英文摘要	Artificial freezing ground method is widely applied in adverse geotechnical engineering conditions to improve the strength and reduce permeability of soil. It is a challenge to ascertain the progression of frozen wall and analyze the arrangement of freezing pipes due to the complexity of freezing process involving ice-water phase change and water migration. To analyze the progression of frozen wall and its influencing factors, a hydro-thermo coupling model is established, and a water-conveyance tunnel constructed by artificial freezing method is carried out. The results show that: (1) Water migration and ice-water phase transition have significant influences on temperature distribution, and their effects should not be neglected. (2) The thickness of frozen wall with temperature lower than 10 degrees C has attained the required design value at the end of active freezing. Meantime, under drive of temperature gradient, water migrates and redistributes. (3) The interval angle for two adjacent pipes is the main influencing factor on progression of frozen wall, followed by the freezing pipe diameter and horizontal spacing. Additionally, for coarse-grained soil, the influence of seepage on development of frozen wall is significant. This study will provide a theoretical reference for frozen wall design.
关键词	MASS-TRANSFER PIPE-ROOF TEMPERATURE MODEL SOIL WALL
英文关键词	Artificial freezing method; Moisture-heat process; Frozen wall; Closure time; Influencing factor
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS记录号	WOS:000612543900003
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/254316
作者单位	[Li, Ming] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730070, Peoples R China; [Ma, Qinguo; Luo, Xiaoxiao; Jiang, Haiqiang; Li, Yongdong] South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510641, Guangdong, Peoples R China; [Ma, Qinguo; Luo, Xiaoxiao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Ming,Ma, Qinguo,Luo, Xiaoxiao,et al. The coupled moisture-heat process of a water-conveyance tunnel constructed by artificial ground freezing method[J]. 中国科学院西北生态环境资源研究院,2021,182.
APA	Li, Ming,Ma, Qinguo,Luo, Xiaoxiao,Jiang, Haiqiang,&Li, Yongdong.(2021).The coupled moisture-heat process of a water-conveyance tunnel constructed by artificial ground freezing method.COLD REGIONS SCIENCE AND TECHNOLOGY,182.
MLA	Li, Ming,et al."The coupled moisture-heat process of a water-conveyance tunnel constructed by artificial ground freezing method".COLD REGIONS SCIENCE AND TECHNOLOGY 182(2021).