Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir Area
The stability of the reservoir bank landslide is affected by a variety of external factors, and the fluctuation of reservoir water level is one of the important influencing factors. The Erdaohe landslide is a typically colluvial landslide in the Three Gorges Reservoir area with periodic reservoir wa...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/6865129 |
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| author | Zhaodan Cao Jun Tang Xiaoer Zhao Yonggang Zhang Bin Wang Lichen Li Fei Guo |
| author_facet | Zhaodan Cao Jun Tang Xiaoer Zhao Yonggang Zhang Bin Wang Lichen Li Fei Guo |
| author_sort | Zhaodan Cao |
| collection | DOAJ |
| description | The stability of the reservoir bank landslide is affected by a variety of external factors, and the fluctuation of reservoir water level is one of the important influencing factors. The Erdaohe landslide is a typically colluvial landslide in the Three Gorges Reservoir area with periodic reservoir water level fluctuations. According to landslide displacement data, the displacement of the Erdaohe landslide exhibits the significantly stepwise feature. Its failure mechanism was analyzed using strength reduction method by the FLAC3D package in the case of reservoir water level changes. The results indicate that the hydrodynamic pressure has an important impact on the initialization of the landslide failure. When reservoir water level rises rapidly or maintains constant at the lower level, the landslide stability would be higher. When the reservoir water level decreases rapidly or maintains constant at the higher level, the landslide stability will be smaller. When the reservoir water level was in the lowest elevation, the factor of safety (FS) reached the minimum value of 1.11. Findings in this paper can provide guidelines for the risk assessment of colluvial landslides. |
| format | Article |
| id | doaj-art-16f5315f8d3845c78feb621edc8683f6 |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-16f5315f8d3845c78feb621edc8683f62025-02-03T01:03:41ZengWileyGeofluids1468-81232021-01-01202110.1155/2021/6865129Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir AreaZhaodan Cao0Jun Tang1Xiaoer Zhao2Yonggang Zhang3Bin Wang4Lichen Li5Fei Guo6College of Civil Engineering and ArchitectureXiamen Xijiao Hard Science Industrial Technology Research Institute Co.School of Environmental and Municipal EngineeringKey Laboratory of Geotechnical and Underground Engineering of Ministry of EducationInstitution Mountain Hazards & EnvironmentEngineering Research Centre of Rock-Soil Drilling & Excavation and ProtectionKey Laboratory of Disaster Prevention and Mitigation of Hubei ProvinceThe stability of the reservoir bank landslide is affected by a variety of external factors, and the fluctuation of reservoir water level is one of the important influencing factors. The Erdaohe landslide is a typically colluvial landslide in the Three Gorges Reservoir area with periodic reservoir water level fluctuations. According to landslide displacement data, the displacement of the Erdaohe landslide exhibits the significantly stepwise feature. Its failure mechanism was analyzed using strength reduction method by the FLAC3D package in the case of reservoir water level changes. The results indicate that the hydrodynamic pressure has an important impact on the initialization of the landslide failure. When reservoir water level rises rapidly or maintains constant at the lower level, the landslide stability would be higher. When the reservoir water level decreases rapidly or maintains constant at the higher level, the landslide stability will be smaller. When the reservoir water level was in the lowest elevation, the factor of safety (FS) reached the minimum value of 1.11. Findings in this paper can provide guidelines for the risk assessment of colluvial landslides.http://dx.doi.org/10.1155/2021/6865129 |
| spellingShingle | Zhaodan Cao Jun Tang Xiaoer Zhao Yonggang Zhang Bin Wang Lichen Li Fei Guo Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir Area Geofluids |
| title | Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir Area |
| title_full | Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir Area |
| title_fullStr | Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir Area |
| title_full_unstemmed | Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir Area |
| title_short | Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir Area |
| title_sort | failure mechanism of colluvial landslide influenced by the water level change in the three gorges reservoir area |
| url | http://dx.doi.org/10.1155/2021/6865129 |
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