The thermal effect of strengthening measures in an insulated embankment in a permafrost region (SCI)
文献类型：期刊论文
| 作者 | Hou Y. D.; Wu Q. B.; Liu Y. Z.; Zhang Z. Q.; Gao S. R. |
| 刊名 | Cold Regions Science and Technology
 |
| 出版日期 | 2015 |
| 卷号 | 116页码:49-55 |
| 英文摘要 | An embankment with heat insulation can only retard a rise in temperature or the thawing of permafrost, and the thermal stability of the embankment cannot be maintained under global warming conditions. Therefore, strengthening measures are required to ensure embankment stability. Based on in-situ observational data from the Qinghai-Xizang Railway in Beiluhe, variations in the thermal regime under a thermally insulated embankment after the implementation of strengthening measures were analysed. The results show that the strengthening measure of thermosyphon installation can play an effective role in the embankment cooling process; however, no protective effect of the spall rock revetment was observed. The shallow mean annual maximum temperature in the upper 0.5 m of soil decreased from 2.2 to 0 degrees C with an average of 1.8 degrees C, appearing as a striking "cold energy accumulation" process which predominantly results from thermosyphons and heat insulation material, after the strengthening measures were implemented. Meanwhile, the permafrost table under the embankment appeared as a "second rising process", ranging from 0.90 m for DK1139 + 670 to 2.56 m for DK1139 + 780, with an average of 1.66 m. The "sunny shady slope effect" was not well controlled after the implementation of the strengthening measures under the embankment with thermal insulation. However, the difference in temperature between the ground and underlying permafrost table, under the left and right shoulder of the embankment, gradually decreased. Besides, thermal influence of the embankment to the surrounding permafrost in the deep layer is observed to be eliminated after the implementation of the strengthening measures. (C) 2015 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27556]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Hou Y. D.,Wu Q. B.,Liu Y. Z.,et al. The thermal effect of strengthening measures in an insulated embankment in a permafrost region (SCI)[J]. Cold Regions Science and Technology,2015,116:49-55. |
| APA | Hou Y. D.,Wu Q. B.,Liu Y. Z.,Zhang Z. Q.,&Gao S. R..(2015).The thermal effect of strengthening measures in an insulated embankment in a permafrost region (SCI).Cold Regions Science and Technology,116,49-55. |
| MLA | Hou Y. D.,et al."The thermal effect of strengthening measures in an insulated embankment in a permafrost region (SCI)".Cold Regions Science and Technology 116(2015):49-55. |
入库方式： OAI收割
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。