Settlement of embankments in permafrost regions in the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Qi Jilin; Yu, Sheng; Zhang Jianming; Zhi, Wen |
| 刊名 | NORSK GEOGRAFISK TIDSSKRIFT-NORWEGIAN JOURNAL OF GEOGRAPHY
 |
| 出版日期 | 2007-06-01 |
| 卷号 | 61期号:2页码:49-55 |
| 关键词 | embankment equivalent permafrost table permafrost settlement |
| ISSN号 | 0029-1951 |
| DOI | 10.1080/00291950701409249 |
| 通讯作者 | Qi Jilin(qijilin@ns.lzb.ac.cn) |
| 英文摘要 | Settlement of embankments in permafrost regions results from several simultaneous processes, each with a different mechanism. The first is the well-known process of thaw settlement due to the degradation of permafrost underneath. This has been considered to be the most problematic and has attracted great attention in previous studies. The second process is that of creep. Field observations show that due to the construction of embankments, the temperature in permafrost layers may rise remarkably, forming a large 'warmer' frozen layer with a higher tendency to creep. At the same time, creep of unfrozen soils can take place in the active layer in warm seasons under new loading conditions. Third, because freeze-thaw cycling in the active layer can change the soil properties, additional Settlement would also take place in the First years. These three processes are interactive, which makes any attempts at calculation very difficult. The article first reviews the basic methodologies and their limitations for settlement estimation. Then, based on the practice in the construction of a highway and a railway on the Qinghai-Tibet Plateau. the possible settlement sources are analysed. In order to investigate the whole settlement comprehensively with clear mechanisms, the concept of an equivalent permafrost table is proposed. |
| 收录类别 | SSCI |
| WOS关键词 | VOLUME CHANGES ; CONSTRUCTION ; PERMEABILITY ; RAILWAY ; SOILS ; FROST |
| WOS研究方向 | Geography |
| WOS类目 | Geography |
| 语种 | 英语 |
| WOS记录号 | WOS:000253853900001 |
| 出版者 | TAYLOR & FRANCIS AS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555997 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Qi Jilin |
| 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 | Qi Jilin,Yu, Sheng,Zhang Jianming,et al. Settlement of embankments in permafrost regions in the Qinghai-Tibet Plateau[J]. NORSK GEOGRAFISK TIDSSKRIFT-NORWEGIAN JOURNAL OF GEOGRAPHY,2007,61(2):49-55. |
| APA | Qi Jilin,Yu, Sheng,Zhang Jianming,&Zhi, Wen.(2007).Settlement of embankments in permafrost regions in the Qinghai-Tibet Plateau.NORSK GEOGRAFISK TIDSSKRIFT-NORWEGIAN JOURNAL OF GEOGRAPHY,61(2),49-55. |
| MLA | Qi Jilin,et al."Settlement of embankments in permafrost regions in the Qinghai-Tibet Plateau".NORSK GEOGRAFISK TIDSSKRIFT-NORWEGIAN JOURNAL OF GEOGRAPHY 61.2(2007):49-55. |
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。