Laboratory investigation on the cooling effect of crushed-rock interlayer embankment with ventilated ducts in permafrost regions
文献类型：期刊论文
| 作者 | Dong, Yuanhong1; Lai, Yuanming1; Li, Jingbo1,2; Yang, Yugui1 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2010-05-01 |
| 卷号 | 61期号:2-3页码:136-142 |
| 关键词 | Crushed-rock interlayer embankment Ventilated duct Cooling effect High-grade highway |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2010.01.012 |
| 通讯作者 | Lai, Yuanming(ymlai@lzb.ac.cn) |
| 英文摘要 | The engineering construction in permafrost regions would cause warming, even thaw of permafrost. This would bring thaw settlement damage and even failure to railway/highway embankments by exerting great influence on the embankment stability. Some traditional cooling measures have been proved to be effective on ensuring the thermal stability of embankment in the construction of the Qinghai-Tibet Railway. However, these cooling measures are applicable to the embankment of ordinary width, and would be unable to protect the underlying permafrost and ensure the stability of the high-grade highway embankment with multi-lane pavement. Due to the great heat intake caused by the asphalt-concrete pavement and a higher standard on settlement and uneven deformation, the permafrost problem is even more serious for high-grade highways of large-width than that for highway of ordinary width. To solve this new permafrost problem, traditional cooling measures should be either reinforced or combined. In this study, a new approach of a joint cooling measure consisting of crushed-rock interlayer and ventilated ducts was presented. A laboratory test was carried out to preliminarily investigate the effect of the new cooling measure. In the test, the temperature characteristics of two crushed-rock interlayer embankments with and without ventilated ducts are compared. The test results showed that the crushed-rock interlayer performed a more efficient cooling effect when the ventilated ducts are added than that when they are not added. The effect is direct: the performance of the ventilated ducts decreased the upper boundary temperature of the crushed-rock interlayer, and consequently enhanced its natural convection and cooling effect. Therefore, the crushed-rock interlayer embankment with ventilated ducts has a good cooling effect to the underlying permafrost, and should be recommended in the construction of large-width highways in permafrost regions. (C) 2010 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:000276918100009 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556293 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Lai, Yuanming |
| 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.Yichun Univ, Coll Phys Sci & Engn Technol, Yichun 336000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Yuanhong,Lai, Yuanming,Li, Jingbo,et al. Laboratory investigation on the cooling effect of crushed-rock interlayer embankment with ventilated ducts in permafrost regions[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2010,61(2-3):136-142. |
| APA | Dong, Yuanhong,Lai, Yuanming,Li, Jingbo,&Yang, Yugui.(2010).Laboratory investigation on the cooling effect of crushed-rock interlayer embankment with ventilated ducts in permafrost regions.COLD REGIONS SCIENCE AND TECHNOLOGY,61(2-3),136-142. |
| MLA | Dong, Yuanhong,et al."Laboratory investigation on the cooling effect of crushed-rock interlayer embankment with ventilated ducts in permafrost regions".COLD REGIONS SCIENCE AND TECHNOLOGY 61.2-3(2010):136-142. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。