Long-term thermal regimes of the Qinghai-Tibet Railway embankments in plateau permafrost regions
文献类型：期刊论文
| 作者 | Niu FuJun1,2; Liu MingHao1,3; Cheng GuoDong1; Lin ZhanJu1; Luo Jing1,3; Yin GuoAn1,3 |
| 刊名 | SCIENCE CHINA-EARTH SCIENCES
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 58期号:9页码:1669-1676 |
| 关键词 | Qinghai-Tibet Railway permafrost embankment structure thermal regime long-term stability |
| ISSN号 | 1674-7313 |
| DOI | 10.1007/s11430-015-5063-0 |
| 通讯作者 | Niu FuJun(niufujun@lzb.ac.cn) |
| 英文摘要 | Ten years of ground temperature data (2003-2013) indicate that the long-term thermal regimes within embankments of the Qinghai-Tibet Railway (QTR) vary significantly with different embankment structures. Obvious asymmetries exist in the ground temperature fields within the traditional embankment (TE) and the crushed-rock basement embankment (CRBE). Measurements indicate that the TE and CRBE are not conducive to maintaining thermal stability. In contrast, the ground temperature fields of both the crushed-rock sloped embankment (CRSE) and the U-shaped crushed-rock embankment (UCRE) were symmetrical. However, the UCRE gave better thermal stability than the CRSE because slow warming of deep permafrost was observed under the CRSE. Therefore, the UCRE has the best long-term effect of decreasing ground temperature and improving the symmetry of the temperature field. More generally, it is concluded that construction using the cooling-roadbed principle meets the design requirements for long-term stability of the railway and for train transport speeds of 100 km h(-1). However, temperature differences between the two shoulders, which exist in all embankments shoulders, may cause potential uneven settlement and might require maintenance. |
| 收录类别 | SCI |
| WOS关键词 | ROADBED COOLING APPROACH ; ROCK EMBANKMENT ; RAILROAD ; IMPACT |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000360092500017 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557049 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Niu FuJun |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China 2.CCCC First Highway Consultants Co Ltd, Key Lab Highway Construct & Maintenance Technol P, Minist Transport, Xian 710075, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu FuJun,Liu MingHao,Cheng GuoDong,et al. Long-term thermal regimes of the Qinghai-Tibet Railway embankments in plateau permafrost regions[J]. SCIENCE CHINA-EARTH SCIENCES,2015,58(9):1669-1676. |
| APA | Niu FuJun,Liu MingHao,Cheng GuoDong,Lin ZhanJu,Luo Jing,&Yin GuoAn.(2015).Long-term thermal regimes of the Qinghai-Tibet Railway embankments in plateau permafrost regions.SCIENCE CHINA-EARTH SCIENCES,58(9),1669-1676. |
| MLA | Niu FuJun,et al."Long-term thermal regimes of the Qinghai-Tibet Railway embankments in plateau permafrost regions".SCIENCE CHINA-EARTH SCIENCES 58.9(2015):1669-1676. |
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来源：寒区旱区环境与工程研究所
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