Study on the mechanical properties of embankment soil under long-term immersion conditions
During flood season, embankments are often submerged in high water levels for extended periods, leading to deterioration in their soil mechanics performance and increasing the risk of slope instability and other hazards. In order to investigate the changes in mechanical properties of embankment slop...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-10-01
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| Series: | Frontiers in Materials |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2023.1270082/full |
| _version_ | 1797648564539621376 |
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| author | Kun Zhang Di Feng Zhikui Wang |
| author_facet | Kun Zhang Di Feng Zhikui Wang |
| author_sort | Kun Zhang |
| collection | DOAJ |
| description | During flood season, embankments are often submerged in high water levels for extended periods, leading to deterioration in their soil mechanics performance and increasing the risk of slope instability and other hazards. In order to investigate the changes in mechanical properties of embankment slopes during long-term water immersion, direct shear tests were conducted. Scanning electron microscopy, chemical composition analysis, and laser particle size analysis were conducted on samples taken at different immersion periods. Clay samples were taken from the embankments at Jiangxinzhou in Nanjing, Jiangsu Province, China. Results showed the shear strength of the soil gradually decreases with the increase of immersion time, while the cohesive force and internal friction angle gradually decrease as well. This suggests that immersion has a softening effect on the shear strength of the soil. As the immersion time increases, the colloidal particles (soluble salt) rapidly dissolves, the microstructure of the soil is destroyed, and sticky particles increases, resulting in a change in the shear strength of the soil. The research results provide a basis for flood control and prevention of embankments immersed in high water levels for long periods during the flood season. |
| first_indexed | 2024-03-11T15:33:58Z |
| format | Article |
| id | doaj.art-42e4a73406a44c5d875d776d01b4ebe5 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-03-11T15:33:58Z |
| publishDate | 2023-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-42e4a73406a44c5d875d776d01b4ebe52023-10-27T00:26:24ZengFrontiers Media S.A.Frontiers in Materials2296-80162023-10-011010.3389/fmats.2023.12700821270082Study on the mechanical properties of embankment soil under long-term immersion conditionsKun Zhang0Di Feng1Zhikui Wang2Department of Civil and Transportation Engineering, Hohai University, Nanjing, ChinaDepartment of Civil and Transportation Engineering, Hohai University, Nanjing, ChinaChina Railway Construction Underwater Shield Tunnel Engineering Laboratory, China Railway 14th Bureau Group Co., Ltd., Jinan, ChinaDuring flood season, embankments are often submerged in high water levels for extended periods, leading to deterioration in their soil mechanics performance and increasing the risk of slope instability and other hazards. In order to investigate the changes in mechanical properties of embankment slopes during long-term water immersion, direct shear tests were conducted. Scanning electron microscopy, chemical composition analysis, and laser particle size analysis were conducted on samples taken at different immersion periods. Clay samples were taken from the embankments at Jiangxinzhou in Nanjing, Jiangsu Province, China. Results showed the shear strength of the soil gradually decreases with the increase of immersion time, while the cohesive force and internal friction angle gradually decrease as well. This suggests that immersion has a softening effect on the shear strength of the soil. As the immersion time increases, the colloidal particles (soluble salt) rapidly dissolves, the microstructure of the soil is destroyed, and sticky particles increases, resulting in a change in the shear strength of the soil. The research results provide a basis for flood control and prevention of embankments immersed in high water levels for long periods during the flood season.https://www.frontiersin.org/articles/10.3389/fmats.2023.1270082/fullembankment soilshear strengthlong-term immersionmechanical propertiesslope instability |
| spellingShingle | Kun Zhang Di Feng Zhikui Wang Study on the mechanical properties of embankment soil under long-term immersion conditions Frontiers in Materials embankment soil shear strength long-term immersion mechanical properties slope instability |
| title | Study on the mechanical properties of embankment soil under long-term immersion conditions |
| title_full | Study on the mechanical properties of embankment soil under long-term immersion conditions |
| title_fullStr | Study on the mechanical properties of embankment soil under long-term immersion conditions |
| title_full_unstemmed | Study on the mechanical properties of embankment soil under long-term immersion conditions |
| title_short | Study on the mechanical properties of embankment soil under long-term immersion conditions |
| title_sort | study on the mechanical properties of embankment soil under long term immersion conditions |
| topic | embankment soil shear strength long-term immersion mechanical properties slope instability |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2023.1270082/full |
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