Monitoring study on the boundary thermal conditions of duct-ventilated embankment in permafrost regions
文献类型：期刊论文
| 作者 | Niu Fujun1,2; Liu Xingfu1; Ma Wei1; Wu Qingbai1; Xu Jian1 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2008-08-01 |
| 卷号 | 53期号:3页码:305-316 |
| 关键词 | Permafrost Ventilation embankment Boundary condition Simulation Temperature field |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2007.07.004 |
| 通讯作者 | Niu Fujun(niufujun@lzb.ac.cn) |
| 英文摘要 | Duct-ventilated embankment is a roadbed construction method for cooling the underlying soils in permafrost regions. However, numerical simulation methods to predict the long-term permafrost-protecting effectiveness of the roadbed encounter difficulties in selecting boundary conditions, because no monitored data has been collected. In this paper, based on monitored data of field experimental embankments in the Beiluhe section of the Qinghai-Tibet Railway, air temperatures in the ducts and the walls were analyzed and simulated. The results indicated that the annual air temperatures in the ducts were higher than the environmental air temperature by a value of 1.6 to 1.8 degrees C. This value was less than 1.0 degrees C in thawing periods and 2.0 degrees C in freezing periods. On the embankment, the ground temperature at a depth of 0.5 m was higher on south-facing slopes than on north-facing slopes, with a value of 3.5 to 5.5 degrees C. The monitored data showed that the natural ground surface temperature was about 2.5 degrees C higher and the embankment surface temperature was 4.0 degrees C higher than the environmental air temperature, indicating that some values used in previous numerical analyses of surface temperature of the natural ground and embankment were reasonable. To better predict the long-time effect of duct-ventilated embankment on the underlying frozen soils, a physical model and the relative boundary conditions need to be incorporated into numerical analyses. (C) 2007 Elsevier B.V All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | QINGHAI-TIBET RAILWAY |
| 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:000260040200007 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556062 |
| 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, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.First Highway Design & Res Inst, Cold Reg Rd Engn Lab, Xian 710068, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu Fujun,Liu Xingfu,Ma Wei,et al. Monitoring study on the boundary thermal conditions of duct-ventilated embankment in permafrost regions[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2008,53(3):305-316. |
| APA | Niu Fujun,Liu Xingfu,Ma Wei,Wu Qingbai,&Xu Jian.(2008).Monitoring study on the boundary thermal conditions of duct-ventilated embankment in permafrost regions.COLD REGIONS SCIENCE AND TECHNOLOGY,53(3),305-316. |
| MLA | Niu Fujun,et al."Monitoring study on the boundary thermal conditions of duct-ventilated embankment in permafrost regions".COLD REGIONS SCIENCE AND TECHNOLOGY 53.3(2008):305-316. |
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来源：寒区旱区环境与工程研究所
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