Slope Instability Analysis in Permafrost Regions by Shear Strength Parameters and Numerical Simulation
With the onset of global warming, the environment has profoundly changed. The melting of ice and slope instability were widely observed in the permafrost regions of the Qinghai–Tibet Plateau, which has destroyed infrastructure and threatened people’s safety. For this study, we conducted a direct she...
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2022
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ftdoajarticles:oai:doaj.org/article:bf9f5773e48c4e359225f508aa8ee74e 2023-05-15T16:37:01+02:00 Slope Instability Analysis in Permafrost Regions by Shear Strength Parameters and Numerical Simulation Bao Zhou Yingli Zhang Sailajia Wei Zhongfu Wang Wenfeng Zhu Zhijia Xue 2022-08-01T00:00:00Z https://doi.org/10.3390/su14159401 https://doaj.org/article/bf9f5773e48c4e359225f508aa8ee74e EN eng MDPI AG https://www.mdpi.com/2071-1050/14/15/9401 https://doaj.org/toc/2071-1050 doi:10.3390/su14159401 2071-1050 https://doaj.org/article/bf9f5773e48c4e359225f508aa8ee74e Sustainability, Vol 14, Iss 9401, p 9401 (2022) slope instability permafrost region shear strength parameter numerical simulation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 article 2022 ftdoajarticles https://doi.org/10.3390/su14159401 2022-12-31T00:54:49Z With the onset of global warming, the environment has profoundly changed. The melting of ice and slope instability were widely observed in the permafrost regions of the Qinghai–Tibet Plateau, which has destroyed infrastructure and threatened people’s safety. For this study, we conducted a direct shear test, monitored field temperature, and performed a numerical simulation to explore the mechanism of slope instability in the permafrost regions of the Qinghai. The results show that the shear strength of the permafrost soil decreased with the increases in water content and thawing condition. Moreover, the thawing depth of the slopes increased with the rising temperature. From the temperature monitoring data and field observations, cracks and slope instability phenomena were observed in the Qinghai and occurred with the thawing of the permafrost soil. The safety of slopes in the permafrost regions decreased with increases in the temperature, slope gradient, and pore water pressure and with decreases in the shear strength parameters. In addition, the sliding interface had a direct correlation with the freeze–thaw interface, which is a migrated interface of water in liquid form. Therefore, the thawing of the permafrost soil causes the shear strength to decrease and pore water pressure to increase, which leads to slope instability in the permafrost regions of the Qinghai. Article in Journal/Newspaper Ice permafrost Directory of Open Access Journals: DOAJ Articles Sustainability 14 15 9401 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
slope instability permafrost region shear strength parameter numerical simulation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
spellingShingle |
slope instability permafrost region shear strength parameter numerical simulation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Bao Zhou Yingli Zhang Sailajia Wei Zhongfu Wang Wenfeng Zhu Zhijia Xue Slope Instability Analysis in Permafrost Regions by Shear Strength Parameters and Numerical Simulation |
topic_facet |
slope instability permafrost region shear strength parameter numerical simulation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
description |
With the onset of global warming, the environment has profoundly changed. The melting of ice and slope instability were widely observed in the permafrost regions of the Qinghai–Tibet Plateau, which has destroyed infrastructure and threatened people’s safety. For this study, we conducted a direct shear test, monitored field temperature, and performed a numerical simulation to explore the mechanism of slope instability in the permafrost regions of the Qinghai. The results show that the shear strength of the permafrost soil decreased with the increases in water content and thawing condition. Moreover, the thawing depth of the slopes increased with the rising temperature. From the temperature monitoring data and field observations, cracks and slope instability phenomena were observed in the Qinghai and occurred with the thawing of the permafrost soil. The safety of slopes in the permafrost regions decreased with increases in the temperature, slope gradient, and pore water pressure and with decreases in the shear strength parameters. In addition, the sliding interface had a direct correlation with the freeze–thaw interface, which is a migrated interface of water in liquid form. Therefore, the thawing of the permafrost soil causes the shear strength to decrease and pore water pressure to increase, which leads to slope instability in the permafrost regions of the Qinghai. |
format |
Article in Journal/Newspaper |
author |
Bao Zhou Yingli Zhang Sailajia Wei Zhongfu Wang Wenfeng Zhu Zhijia Xue |
author_facet |
Bao Zhou Yingli Zhang Sailajia Wei Zhongfu Wang Wenfeng Zhu Zhijia Xue |
author_sort |
Bao Zhou |
title |
Slope Instability Analysis in Permafrost Regions by Shear Strength Parameters and Numerical Simulation |
title_short |
Slope Instability Analysis in Permafrost Regions by Shear Strength Parameters and Numerical Simulation |
title_full |
Slope Instability Analysis in Permafrost Regions by Shear Strength Parameters and Numerical Simulation |
title_fullStr |
Slope Instability Analysis in Permafrost Regions by Shear Strength Parameters and Numerical Simulation |
title_full_unstemmed |
Slope Instability Analysis in Permafrost Regions by Shear Strength Parameters and Numerical Simulation |
title_sort |
slope instability analysis in permafrost regions by shear strength parameters and numerical simulation |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/su14159401 https://doaj.org/article/bf9f5773e48c4e359225f508aa8ee74e |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Sustainability, Vol 14, Iss 9401, p 9401 (2022) |
op_relation |
https://www.mdpi.com/2071-1050/14/15/9401 https://doaj.org/toc/2071-1050 doi:10.3390/su14159401 2071-1050 https://doaj.org/article/bf9f5773e48c4e359225f508aa8ee74e |
op_doi |
https://doi.org/10.3390/su14159401 |
container_title |
Sustainability |
container_volume |
14 |
container_issue |
15 |
container_start_page |
9401 |
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1766027331513614336 |