Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment
Due to the special engineering geology characteristics of permafrost, construction in permafrost regions tends to result in serious permafrost-related engineering problems. Thaw settlement induced by permafrost degradation is the principal challenge for railway construction on the Qinghai-Tibetan Pl...
Published in: | Canadian Geotechnical Journal |
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Canadian Science Publishing
2012
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Online Access: | http://dx.doi.org/10.1139/t2012-058 http://www.nrcresearchpress.com/doi/full-xml/10.1139/t2012-058 http://www.nrcresearchpress.com/doi/pdf/10.1139/t2012-058 |
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crcansciencepubl:10.1139/t2012-058 2024-09-30T14:36:22+00:00 Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment Ma, Wei Wen, Zhi Sheng, Yu Wu, Qingbai Wang, Dayan Feng, Wenjie 2012 http://dx.doi.org/10.1139/t2012-058 http://www.nrcresearchpress.com/doi/full-xml/10.1139/t2012-058 http://www.nrcresearchpress.com/doi/pdf/10.1139/t2012-058 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Geotechnical Journal volume 49, issue 9, page 1005-1014 ISSN 0008-3674 1208-6010 journal-article 2012 crcansciencepubl https://doi.org/10.1139/t2012-058 2024-09-12T04:13:26Z Due to the special engineering geology characteristics of permafrost, construction in permafrost regions tends to result in serious permafrost-related engineering problems. Thaw settlement induced by permafrost degradation is the principal challenge for railway construction on the Qinghai-Tibetan Plateau. It threatens the stability and safety of the railway system, especially in warm and ice-rich permafrost regions. Thaw settlement in section DK1139+780 along the Qinghai-Tibetan railway is a potential risk to the safety of the railway, and a combination of closed thermosyphons and crushed rock revetment was used to remedy permafrost warming and thaw settlement of the embankment. Based on ground temperatures and embankment deformations observed at this site since 2002, the effects of the remedial measures were evaluated. The results show that the remedial measures lowered the ground temperature and raised the permafrost table. The crushed rock slope protection acted as an insulation layer and reduced heat flux into the embankment. The thermosyphons lowered the permafrost temperature and had a good cooling effect on the underlying permafrost. The results show that the remedial measures using two-phase thermosyphons and crushed rock revetment decreased the settlement of the embankment and improved the stability of the railway system. Article in Journal/Newspaper Ice permafrost Canadian Science Publishing Canadian Geotechnical Journal 49 9 1005 1014 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Due to the special engineering geology characteristics of permafrost, construction in permafrost regions tends to result in serious permafrost-related engineering problems. Thaw settlement induced by permafrost degradation is the principal challenge for railway construction on the Qinghai-Tibetan Plateau. It threatens the stability and safety of the railway system, especially in warm and ice-rich permafrost regions. Thaw settlement in section DK1139+780 along the Qinghai-Tibetan railway is a potential risk to the safety of the railway, and a combination of closed thermosyphons and crushed rock revetment was used to remedy permafrost warming and thaw settlement of the embankment. Based on ground temperatures and embankment deformations observed at this site since 2002, the effects of the remedial measures were evaluated. The results show that the remedial measures lowered the ground temperature and raised the permafrost table. The crushed rock slope protection acted as an insulation layer and reduced heat flux into the embankment. The thermosyphons lowered the permafrost temperature and had a good cooling effect on the underlying permafrost. The results show that the remedial measures using two-phase thermosyphons and crushed rock revetment decreased the settlement of the embankment and improved the stability of the railway system. |
format |
Article in Journal/Newspaper |
author |
Ma, Wei Wen, Zhi Sheng, Yu Wu, Qingbai Wang, Dayan Feng, Wenjie |
spellingShingle |
Ma, Wei Wen, Zhi Sheng, Yu Wu, Qingbai Wang, Dayan Feng, Wenjie Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment |
author_facet |
Ma, Wei Wen, Zhi Sheng, Yu Wu, Qingbai Wang, Dayan Feng, Wenjie |
author_sort |
Ma, Wei |
title |
Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment |
title_short |
Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment |
title_full |
Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment |
title_fullStr |
Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment |
title_full_unstemmed |
Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment |
title_sort |
remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment |
publisher |
Canadian Science Publishing |
publishDate |
2012 |
url |
http://dx.doi.org/10.1139/t2012-058 http://www.nrcresearchpress.com/doi/full-xml/10.1139/t2012-058 http://www.nrcresearchpress.com/doi/pdf/10.1139/t2012-058 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Canadian Geotechnical Journal volume 49, issue 9, page 1005-1014 ISSN 0008-3674 1208-6010 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/t2012-058 |
container_title |
Canadian Geotechnical Journal |
container_volume |
49 |
container_issue |
9 |
container_start_page |
1005 |
op_container_end_page |
1014 |
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1811639442031509504 |