Application of the roadbed cooling approach in Qinghai-Tibet railway engineering
文献类型：期刊论文
| 作者 | Cheng, Guodong1; Sun, Zhizhong; Niu, Fujun |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2008-08-01 |
| 卷号 | 53期号:3页码:241-258 |
| 关键词 | Qinghai-Tibet Railway "Warm" Permafrost Climatic warming Cooled roadbed |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2007.02.006 |
| 通讯作者 | Cheng, Guodong(gdcheng@lzb.ac.cn) |
| 英文摘要 | The Qinghai-Tibet Railway goes through 550 kin of permafrost, half of which is classified as "warm" permafrost with a mean annual ground temperature ranging from 0 to - 1 degrees C. The Qinghai-Tibet Railway is a long-term plan. In order to maintain its normal operation, climatic changes over the next 50 to 100 years need to be considered. The passive method of simply increasing the thermal resistance by raising embankment height and using insulating materials has proven ineffective on "warm" permafrost and therefore cannot be used in the construction of Qinghai-Tibet Railway in "warm" and ice-rich permafrost area. To deal with the "warm" nature of the plateau permafrost and global warming, a series of proactive roadbed-cooling methods were employed, which include solar radiation control using shading boards, heat convection control using air ducts, thermosyphons, and air-cooled embankments, and finally heat conduction control using "thermal semi-conductor" materials. A proper combination of these measures can enhance the cooling effect. All these methods can be used to lower the ground temperature and to help stabilize the Qinghai-Tibet Railway. Especially, the air-cooled embankments have the advantages of high efficiency, case of installation, environmental friendliness, and relative low cost. (c) 2007 Published by Elsevier B.V. |
| 收录类别 | SCI |
| WOS关键词 | PERMAFROST REGIONS ; BOUNDARY-CONDITIONS ; EMBANKMENT ; CONSTRUCTION ; PLATEAU |
| 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:000260040200002 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556091 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Cheng, Guodong |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Guodong,Sun, Zhizhong,Niu, Fujun. Application of the roadbed cooling approach in Qinghai-Tibet railway engineering[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2008,53(3):241-258. |
| APA | Cheng, Guodong,Sun, Zhizhong,&Niu, Fujun.(2008).Application of the roadbed cooling approach in Qinghai-Tibet railway engineering.COLD REGIONS SCIENCE AND TECHNOLOGY,53(3),241-258. |
| MLA | Cheng, Guodong,et al."Application of the roadbed cooling approach in Qinghai-Tibet railway engineering".COLD REGIONS SCIENCE AND TECHNOLOGY 53.3(2008):241-258. |
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来源：寒区旱区环境与工程研究所
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