Investigation of embankment with temperature-controlled ventilation along the Qinghai-Tibet Railway
文献类型：期刊论文
| 作者 | Yu Qihao; Niu Fujun; Pan Xicai; Bai Yang; Zhang Mingyi |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2008-07-01 |
| 卷号 | 53期号:2页码:193-199 |
| 关键词 | Qinghai-Tibet railway temperature-controlled ventilated embankment cooling effect |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2007.07.002 |
| 通讯作者 | Yu Qihao(yuqh@lzb.ac.cn) |
| 英文摘要 | The temperature-controlled ventilated embankment (TCVE) is an improved engineering measure developed based on the duct ventilated embankment (DVE). The improved cooling effect of the TCVE is a result of enhanced heat exchange through controlling air convection in the ventilated ducts of the DVE. The field observational data from a TCVE testing section at Beiluhe, about midway in the Qinghai-Tibet Railway permafrost zone, indicates that restricting the air convection in the ducts during warm season can reduce the embankment heat absorption in the embankment. The results also indicate that the temperature in the wells of the ducts of the TCVE was about 1.0 degrees C lower than the temperature in the walls of the ducts of DVE. Especially it was found that in the seasonal ground temperature-decreasing period, the temperature of the permafrost at a depth of 3.5 in below the base of the embankment in TCVE decreased faster than at the same depth below the DVE. Two years after the TCVE was implemented, the temperature at a depth of 3.5 m below the embankment base was found 0.45 degrees C lower than at the same location below the DVE. Thermal modeling of the embankments shows that the mean annual heat loss of a TCVE is about twice that with the DVE, which means a doubled cooling effect of TCVE over DVE if think in this way. In addition, the cooling period with a TCVE is about 40 days longer than with a DVE, which contributes to its cooling effects. (c) 2007 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | PERMAFROST REGIONS ; THERMAL INSULATION |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000257616200006 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556057 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yu Qihao |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu Qihao,Niu Fujun,Pan Xicai,et al. Investigation of embankment with temperature-controlled ventilation along the Qinghai-Tibet Railway[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2008,53(2):193-199. |
| APA | Yu Qihao,Niu Fujun,Pan Xicai,Bai Yang,&Zhang Mingyi.(2008).Investigation of embankment with temperature-controlled ventilation along the Qinghai-Tibet Railway.COLD REGIONS SCIENCE AND TECHNOLOGY,53(2),193-199. |
| MLA | Yu Qihao,et al."Investigation of embankment with temperature-controlled ventilation along the Qinghai-Tibet Railway".COLD REGIONS SCIENCE AND TECHNOLOGY 53.2(2008):193-199. |
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来源：寒区旱区环境与工程研究所
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