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| DOI | 10.1016/j.accre.2022.03.001 |
| Thermal and deformational repairing effect of crushed rock revetment acting as reinforcement along Qinghai–Tibet railway in permafrost regions | |
| Hou Y.-D.; Wu Q.-B.; Zhang M.-L.; Zhou F.-X. | |
| 发表日期 | 2022 |
| ISSN | 1674-9278 |
| 起始页码 | 421 |
| 结束页码 | 431 |
| 卷号 | 13期号:3 |
| 英文摘要 | Due to the particularity and complexity of permafrost subgrade, research on its long-term maintenance and reinforcement under climate warming and engineering activities is of great significance. To mitigate subgrade diseases caused by thermal disturbance during the engineering construction and operation in the initial stage, the crushed-rock revetment (CRR) was additionally paved with a thickness of 1.5 m and 1.0 m on some sunny and shady shoulders of the traditional embankments along the Qinghai–Tibet railway, respectively. The improving effects for thermal and deforming stability are evaluated based on observation data of ground temperatures and embankment deformations at two sites from 2002 to 2014. The results show that a larger uplifting magnitude in the artificial permafrost table (APT), greater ground temperature decreasing amplitudes and reduction ranges of settling rate appear under the shady embankment shoulder in warm permafrost region, and both sides in the cold permafrost region when reinforcing with CRR. However, in warm permafrost region, the laying of CRR on the sunny slope of subgrade may cause considerable thermal disturbance to the underlying permafrost foundation, combined with the resulting additional stress, induce the further expansion of differential settlement. Moreover, the thermal stability strengthening effect of the CRR is closely related to the variation of the APT thickness in the earlier stage, convection intensity inside the CRR, ‘cold energy reserve’ in the deeper permafrost, and amount of solar radiation received by the CRR. More effective reinforcements should be implemented to alleviate the potential threaten beneath sunny embankment slope in warm permafrost regions. © 2022 The Authors |
| 英文关键词 | Artificial permafrost table; Crushed-rock revetment; Differential settlement; Ice-rich permafrost; Thermal stability |
| 语种 | 英语 |
| 来源期刊 | Advances in Climate Change Research
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/262069 |
| 作者单位 | School of Civil Engineering, Lanzhou University of Technology, Lanzhou, 730050, China; State Key Laboratory of Frozen Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou, 730000, China; Beiluhe Observation Station of Frozen Soil Environment and Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou, 730000, China |
| 推荐引用方式 GB/T 7714 | Hou Y.-D.； Wu Q.-B.； Zhang M.-L.； Zhou F.-X.. Thermal and deformational repairing effect of crushed rock revetment acting as reinforcement along Qinghai–Tibet railway in permafrost regions[J]. 中国科学院西北生态环境资源研究院,2022,13(3). |
| APA | Hou Y.-D.； Wu Q.-B.； Zhang M.-L.； Zhou F.-X..(2022).Thermal and deformational repairing effect of crushed rock revetment acting as reinforcement along Qinghai–Tibet railway in permafrost regions.Advances in Climate Change Research,13(3). |
| MLA | Hou Y.-D.； Wu Q.-B.； Zhang M.-L.； Zhou F.-X.."Thermal and deformational repairing effect of crushed rock revetment acting as reinforcement along Qinghai–Tibet railway in permafrost regions".Advances in Climate Change Research 13.3(2022). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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