Ground-temperature controlling effects of duct-ventilated railway embankment in permafrost regions
文献类型：期刊论文
| 作者 | Niu, FJ; Cheng, GD; Yu, QH |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2004-08-01 |
| 卷号 | 47页码:152-160 |
| 关键词 | Qinghai-Tibet railway permafrost ventilation embankment ground temperature heat flux |
| ISSN号 | 1006-9313 |
| DOI | 10.1360/04zd0017 |
| 通讯作者 | Niu, FJ(niufujun@ns.lzb.ac.cn) |
| 英文摘要 | Based on observed data from field-testing embankment of the Qinghai-Tibet Railway, ground-temperature controlling effect of duct-ventilated embankment is studied in this paper. The results show that ventilation ducts can effectively cool the soils surrounding the ducts of the embankment, and the heat budget of the ambient soils in a year shows as heat release. Temperature status of the permafrost below the embankment with ducts buried in the relatively high position is similar to that of the common embankment. The permafrost processes warming all along in the two freezing-thawing cycles when the embankment was constructed. However, the temperature of the frozen soils below the embankment, in which the ducts buried in the relatively low position, rises a little in the initial stage. After that, it cools down gradually. At the same time, ventilation ducts can effectively reduce the thermal disturbance caused by the filled soils. The frozen soils below the common embankment and that with high-posited ducts absorb heat all along in the initial two cycles. While the soils below the embankment with low-posited ducts begin to release heat in the second cycle. This phenomenon proves that the ventilation embankment with low-posited ducts shows efficient temperature-control ling effect. Such embankment can actively cool the subgrade soils and therefore keeps the roadbed thermally stable. |
| 收录类别 | SCI |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000224381400017 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555618 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Niu, FJ |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Frozen Soil Engn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu, FJ,Cheng, GD,Yu, QH. Ground-temperature controlling effects of duct-ventilated railway embankment in permafrost regions[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2004,47:152-160. |
| APA | Niu, FJ,Cheng, GD,&Yu, QH.(2004).Ground-temperature controlling effects of duct-ventilated railway embankment in permafrost regions.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,47,152-160. |
| MLA | Niu, FJ,et al."Ground-temperature controlling effects of duct-ventilated railway embankment in permafrost regions".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 47(2004):152-160. |
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来源：寒区旱区环境与工程研究所
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