Thermal regime in the embankment of Qinghai–Tibetan Highway in permafrost regions
Based on the data of two groups of ground temperature along Qinghai–Tibetan Highway in permafrost regions in recent five years, this paper analyzes the thermal regime in the embankment in higher and lower temperature permafrost regions, respectively. The results show that the annual mean ground temp...
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Published in | Cold regions science and technology Vol. 35; no. 1; pp. 35 - 44 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
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Amsterdam
Elsevier B.V
01.06.2002
Elsevier |
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Abstract | Based on the data of two groups of ground temperature along Qinghai–Tibetan Highway in permafrost regions in recent five years, this paper analyzes the thermal regime in the embankment in higher and lower temperature permafrost regions, respectively. The results show that the annual mean ground temperature in the embankment is evidently higher than that in the natural ground and the thawing period in the embankment is longer than that in the natural ground, too. In the embankment of higher temperature permafrost regions, talik has formed between the active layer and below permafrost, and the heat flux entering the active layer is in an accumulative state. In both higher and lower temperature permafrost regions, the input of heat into the permafrost below the embankment is greater than the output. The causes of the continual thaw of permafrost in higher temperature permafrost regions are attributed to the ground temperature near 0 °C and the continuous accumulation of heat in the embankment. In lower temperature permafrost regions, the heat entering the permafrost below embankment is mainly to raise the temperature of permafrost for the moment. With the rise of ground temperature, the permafrost below embankment in lower temperature permafrost regions may also be thawed violently. |
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AbstractList | Based on the data of two groups of ground temperature along Qinghai–Tibetan Highway in permafrost regions in recent five years, this paper analyzes the thermal regime in the embankment in higher and lower temperature permafrost regions, respectively. The results show that the annual mean ground temperature in the embankment is evidently higher than that in the natural ground and the thawing period in the embankment is longer than that in the natural ground, too. In the embankment of higher temperature permafrost regions, talik has formed between the active layer and below permafrost, and the heat flux entering the active layer is in an accumulative state. In both higher and lower temperature permafrost regions, the input of heat into the permafrost below the embankment is greater than the output. The causes of the continual thaw of permafrost in higher temperature permafrost regions are attributed to the ground temperature near 0 °C and the continuous accumulation of heat in the embankment. In lower temperature permafrost regions, the heat entering the permafrost below embankment is mainly to raise the temperature of permafrost for the moment. With the rise of ground temperature, the permafrost below embankment in lower temperature permafrost regions may also be thawed violently. Based on the data of two groups of ground temperature along Qinghai--Tibetan Highway in permafrost regions in recent five years, this paper analyzes the thermal regime in the embankment in higher and lower temperature permafrost regions, respectively. The results show that the annual mean ground temperature in the embankment is evidently higher than that in the natural ground and the thawing period in the embankment is longer than that in the natural ground, too. In the embankment of higher temperature permafrost regions, talik has formed between the active layer and below permafrost, and the heat flux entering the active layer is in an accumulative state. In both higher and lower temperature permafrost regions, the input of heat into the permafrost below the embankment is greater than the output. The causes of the continual thaw of permafrost in higher temperature permafrost regions are attributed to the ground temperature near 0 deg C and the continuous accumulation of heat in the embankment. In lower temperature permafrost regions, the heat entering the permafrost below embankment is mainly to raise the temperature of permafrost for the moment. With the rise of ground temperature, the permafrost below embankment in lower temperature permafrost regions may also be thawed violently. |
Author | Yu, Sheng Yongzhi, Liu Jianming, Zhang Jingmin, Wu |
Author_xml | – sequence: 1 givenname: Sheng surname: Yu fullname: Yu, Sheng email: sheng@ns.lzb.ac.cn organization: State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China – sequence: 2 givenname: Zhang surname: Jianming fullname: Jianming, Zhang organization: State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China – sequence: 3 givenname: Liu surname: Yongzhi fullname: Yongzhi, Liu organization: State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China – sequence: 4 givenname: Wu surname: Jingmin fullname: Jingmin, Wu organization: The First Highway Survey and Design Institute, Ministry of Communication, Xi'an 710068, China |
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Keywords | Embankment Permafrost Heat accumulation Ground temperature thawing permafrost Asia embankments temperature highways soils thermal conductivity heat flux thermal regime |
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References | Wang, Zhao (BIB6) 1999; 21 Xu, X., Oliphant, J.L., Tice, A.R., 1985. Factors affecting water migration in frozen soil. CRREL Report 87-9. Liu, Wu, Zhang (BIB2) 2001; 2001 Miller (BIB3) 1972; 393 Xu, Deng (BIB8) 1991 Wang, Li (BIB5) 1983 Wu, Li, Li (BIB7) 2001; 23 Tong, Wu (BIB4) 1996; 2 Li (BIB1) 1983 Wang (10.1016/S0165-232X(02)00026-5_BIB5) 1983 Wang (10.1016/S0165-232X(02)00026-5_BIB6) 1999; 21 Xu (10.1016/S0165-232X(02)00026-5_BIB8) 1991 Miller (10.1016/S0165-232X(02)00026-5_BIB3) 1972; 393 Wu (10.1016/S0165-232X(02)00026-5_BIB7) 2001; 23 Liu (10.1016/S0165-232X(02)00026-5_BIB2) 2001; 2001 Tong (10.1016/S0165-232X(02)00026-5_BIB4) 1996; 2 Li (10.1016/S0165-232X(02)00026-5_BIB1) 1983 10.1016/S0165-232X(02)00026-5_BIB9 |
References_xml | – start-page: 7 year: 1983 end-page: 10 ident: BIB1 article-title: The permafrost temperature and thickness along the Qinghai–Tibetan Highway publication-title: Proceedings of The Symposium on Glaciology and Cryopedology Held by Geographical Society of China contributor: fullname: Li – start-page: 38 year: 1983 end-page: 43 ident: BIB5 article-title: Analysis of geothermal conditions near the permafrost base along the Qinghai–Tibetan highway publication-title: Professional Papers on Permafrost Studies of Qinghai–Tibetan Plateau contributor: fullname: Li – volume: 23 start-page: 1 year: 2001 end-page: 6 ident: BIB7 article-title: The response model of permafrost along the Qinghai–Tibetan highway under climate change publication-title: Journal of Glaciology and Geocryology contributor: fullname: Li – volume: 2 start-page: 221 year: 1996 end-page: 223 ident: BIB4 article-title: The effect of climate warming on Qinghai–Tibet Highway, China publication-title: Cold Regions Science and Technology contributor: fullname: Wu – volume: 2001 start-page: 5 year: 2001 end-page: 8 ident: BIB2 article-title: In-situ experimental studies on temperature field in the embankment in permafrost regions on Qinghai–Tibetan Plateau publication-title: Highway contributor: fullname: Zhang – year: 1991 ident: BIB8 article-title: Experimental Study on Water Migration in Freezing Soils contributor: fullname: Deng – volume: 393 start-page: 1 year: 1972 end-page: 11 ident: BIB3 article-title: Freezing and heaving of saturated and unsaturated soils publication-title: Highway Research Record contributor: fullname: Miller – volume: 21 start-page: 159 year: 1999 end-page: 163 ident: BIB6 article-title: Analysis of the ground temperatures monitored in permafrost regions on the Tibetan Plateau publication-title: Journal of Glaciology and Geocryology contributor: fullname: Zhao – start-page: 7 year: 1983 ident: 10.1016/S0165-232X(02)00026-5_BIB1 article-title: The permafrost temperature and thickness along the Qinghai–Tibetan Highway contributor: fullname: Li – volume: 23 start-page: 1 issue: 1 year: 2001 ident: 10.1016/S0165-232X(02)00026-5_BIB7 article-title: The response model of permafrost along the Qinghai–Tibetan highway under climate change publication-title: Journal of Glaciology and Geocryology contributor: fullname: Wu – ident: 10.1016/S0165-232X(02)00026-5_BIB9 – volume: 393 start-page: 1 year: 1972 ident: 10.1016/S0165-232X(02)00026-5_BIB3 article-title: Freezing and heaving of saturated and unsaturated soils publication-title: Highway Research Record contributor: fullname: Miller – start-page: 38 year: 1983 ident: 10.1016/S0165-232X(02)00026-5_BIB5 article-title: Analysis of geothermal conditions near the permafrost base along the Qinghai–Tibetan highway contributor: fullname: Wang – year: 1991 ident: 10.1016/S0165-232X(02)00026-5_BIB8 contributor: fullname: Xu – volume: 2001 start-page: 5 issue: 2 year: 2001 ident: 10.1016/S0165-232X(02)00026-5_BIB2 article-title: In-situ experimental studies on temperature field in the embankment in permafrost regions on Qinghai–Tibetan Plateau publication-title: Highway contributor: fullname: Liu – volume: 2 start-page: 221 year: 1996 ident: 10.1016/S0165-232X(02)00026-5_BIB4 article-title: The effect of climate warming on Qinghai–Tibet Highway, China publication-title: Cold Regions Science and Technology contributor: fullname: Tong – volume: 21 start-page: 159 issue: 2 year: 1999 ident: 10.1016/S0165-232X(02)00026-5_BIB6 article-title: Analysis of the ground temperatures monitored in permafrost regions on the Tibetan Plateau publication-title: Journal of Glaciology and Geocryology contributor: fullname: Wang |
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Snippet | Based on the data of two groups of ground temperature along Qinghai–Tibetan Highway in permafrost regions in recent five years, this paper analyzes the thermal... Based on the data of two groups of ground temperature along Qinghai--Tibetan Highway in permafrost regions in recent five years, this paper analyzes the... |
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SubjectTerms | Earth sciences Earth, ocean, space Embankment Engineering and environment geology. Geothermics Engineering geology Exact sciences and technology Ground temperature Heat accumulation Permafrost Soils Surficial geology |
Title | Thermal regime in the embankment of Qinghai–Tibetan Highway in permafrost regions |
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