Evolution of temperature field and frozen wall in sandy cobble stratum using LN2 freezing method

doi:10.1016/j.applthermaleng.2020.116334

	Evolution of temperature field and frozen wall in sandy cobble stratum using LN2 freezing method
	Kang, Yongshui 1,3; Hou, Congcong 1,3; Li, Kejin 2; Liu, Bin 1; Sang, Haomin 1,3
刊名	APPLIED THERMAL ENGINEERING
	2021-02-25
卷号	185 页码:9
关键词	Sandy cobble stratum Confined aquifer Artificial freezing Reception shaft Temperature field
ISSN号	1359-4311
DOI	10.1016/j.applthermaleng.2020.116334
英文摘要	There is high risk of water inrush and ground collapse when tunneling in sandy cobble stratum in confined aquifer. Among various methods, artificial freezing method is an effective method to pre-reinforce the soft ground to prevent water inrush and ground collapse during tunneling. This paper mainly focuses on application of artificial freezing method using liquid nitrogen in sandy cobble stratum in confined aquifer. The R1 metro tunnel in China's Jinan city, a well-known City of Springs, is used as a case study. In order to prevent water inrush and ground collapse accidents in the shield machine reception process, liquid nitrogen is applied as a freezing method in the sandy cobble stratum near the reception shaft. First, the heat transition of water in soil associated with liquid nitrogen vaporization is analyzed. Then, a three-dimensional (3D) model is built and the freezing process is simulated. Considering the temperature change of gas nitrogen along the freezing pipe when flowing, the distribution of temperature field and the growth of frozen wall associated with freezing time is obtained. The numerical simulation results show that the freezing method using liquid nitrogen in the sandy cobble stratum can meet the requirement of shield machine reception in sandy cobble stratum rich in groundwater.
资助项目	Youth Innovation Promotion Association CAS[2017377] ; Natural Science Foundation of China[51774267]
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000607843900027
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25631]
专题	中科院武汉岩土力学所
通讯作者	Kang, Yongshui
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.China Railway 14TH Bur Grp Co LTD, Jinan 250014, Shandong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Kang, Yongshui,Hou, Congcong,Li, Kejin,et al. Evolution of temperature field and frozen wall in sandy cobble stratum using LN2 freezing method[J]. APPLIED THERMAL ENGINEERING,2021,185:9.
APA	Kang, Yongshui,Hou, Congcong,Li, Kejin,Liu, Bin,&Sang, Haomin.(2021).Evolution of temperature field and frozen wall in sandy cobble stratum using LN2 freezing method.APPLIED THERMAL ENGINEERING,185,9.
MLA	Kang, Yongshui,et al."Evolution of temperature field and frozen wall in sandy cobble stratum using LN2 freezing method".APPLIED THERMAL ENGINEERING 185(2021):9.