Experimental study on application effects of thermal pipes along Chai-Mu Railway

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	Experimental study on application effects of thermal pipes along Chai-Mu Railway
	Yaling, Chou1,2,3 ; Gongqi, Yang 1,2; Baoan, Li 1,2; Yu, Sheng 3
	2014
发表期刊	Electronic Journal of Geotechnical Engineering
卷号	19 期号:Z 页码:9623-9635
摘要	Thermal pipe is a kind of two-phase closed thermosyphon in use of civil engineering, widely applied not only in large-scale linear engineering, such as highway, railway, but also airport and buildings in permafrost regions. Average annual air temperature, frozen soil type, engineering geological condition, permafrost environments as well as other local factors including sunny-shady slope effect are principal causes which have to be taken into account in order to accurately evaluate the cooling effect of thermal pipe. Through field data of observed cross-sections, the cooling effect of thermal pipe in permafrost regions was analyzed. The result indicates that thermal pipe revetment embankment has perfect effect on cooling the roadbed in permafrost regions. (1)There is a negative exponential function between ground temperature and the distance between thermal pipe and thermometer hole, and the regression equations were shown. Based on the different temperature standards, including the average annual temperature, the highest annual temperature and the lowest annual temperature, the cooling radii of thermal pipe are 2.4m, 0.5m and 4.5m, respectively. (2) In extremely high-temperature unstable permafrost regions and high-temperature unstable permafrost regions, although the typical sections are built on sloping wetlands, the engineering measure that the thermal pipes have stood in two ranks on sunny side and there is a row of pipes on shady side can uplift the artificial permafrost table of the whole embankment, and can reduce the permafrost temperature and the high-temperature permafrost layer. Meanwhile, this engineering measure has removed sunny-shady slope effect and enhanced thermal stability of the embankment. © 2014 ejge.
关键词	Cooling Embankments Exponential functions Frozen soils Permafrost Railroads Slope stability Temperature distribution Thawing Thermodynamic stability Transportation Engineering geological condition Engineering measures Freezing-thawing Negative exponential functions Permafrost environment Sunny-shady effect Thermal pipes Two-phase closed thermosyphon
收录类别	EI
语种	英语
出版者	E-Journal of Geotechnical Engineering
EI入藏号	20160501879402
EI主题词	High temperature engineering
EI分类号	405 Construction Equipment and Methods ; Surveying - 406.2 Roads and Streets - 483 Soil Mechanics and Foundations - 483.1 Soils and Soil Mechanics - 641.1 Thermodynamics - 641.2 Heat Transfer - 921 Mathematics
来源库	Compendex
分类代码	405 Construction Equipment and Methods; Surveying - 406.2 Roads and Streets - 483 Soil Mechanics and Foundations - 483.1 Soils and Soil Mechanics - 641.1 Thermodynamics - 641.2 Heat Transfer - 921 Mathematics
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/113629
专题	土木工程学院
作者单位	1.Key Laboratory of Disaster Prevention and Mitigation, Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, China; 2.Northwest Center for Disaster Mitigation, Civil Engineering of Ministry of Education, Lanzhou, China; 3.State key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Yaling, Chou,Gongqi, Yang,Baoan, Li,et al. Experimental study on application effects of thermal pipes along Chai-Mu Railway[J]. Electronic Journal of Geotechnical Engineering,2014,19(Z):9623-9635.
APA	Yaling, Chou,Gongqi, Yang,Baoan, Li,&Yu, Sheng.(2014).Experimental study on application effects of thermal pipes along Chai-Mu Railway.Electronic Journal of Geotechnical Engineering,19(Z),9623-9635.
MLA	Yaling, Chou,et al."Experimental study on application effects of thermal pipes along Chai-Mu Railway".Electronic Journal of Geotechnical Engineering 19.Z(2014):9623-9635.