Reliability analysis of reservoir landslides in multi-slip zones considering spatial variability and seepage field fluctuation
Rainfall and reservoir water level fluctuations are recognized as primary triggers of landslide instability in conventional reservoir landslide stability and reliability analyses. However, deterministic methods that treat landslides as homogeneous masses disregard the inherent spatial variability in...
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| Format: | Article |
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Taylor & Francis Group
2024-12-01
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| Series: | Geomatics, Natural Hazards & Risk |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19475705.2024.2398111 |
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| author | Yucheng Wang Luqi Wang Xiangwei Fang Wengang Zhang Peixi Xiong Chao Chen Xing Zhu |
| author_facet | Yucheng Wang Luqi Wang Xiangwei Fang Wengang Zhang Peixi Xiong Chao Chen Xing Zhu |
| author_sort | Yucheng Wang |
| collection | DOAJ |
| description | Rainfall and reservoir water level fluctuations are recognized as primary triggers of landslide instability in conventional reservoir landslide stability and reliability analyses. However, deterministic methods that treat landslides as homogeneous masses disregard the inherent spatial variability in soil parameters, resulting in inaccurate calculations of landslide failure probabilities. This study investigates the Taping landslide, a multi-slip zone landslide in the Three Gorges Reservoir area. The landslide stability is evaluated using a deterministic analysis method under rainfall and reservoir water level fluctuation conditions. Subsequently, the unsaturated seepage analysis result is incorporated into a random finite difference method computational framework that considers soil spatial variability to assess the landslide reliability. The probabilistic analysis method is employed to examine the impact of spatial variability in soil parameters on the reliability of the reservoir landslide. The results show that landslide stability and reliability are negatively affected by spatial variability of geotechnical parameter. Furthermore, the coefficient of variation, correlation coefficient, and scales of fluctuation for soil shear strength parameters adversely affect the stability and reliability of the landslide to varying degrees. The study results contribute to the assessment of the probability of failure and the implementation of mitigation and prevention measures for the Taping landslide. |
| format | Article |
| id | doaj-art-b5a8a3d5fff44512905ab08dee4cab70 |
| institution | Kabale University |
| issn | 1947-5705 1947-5713 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj-art-b5a8a3d5fff44512905ab08dee4cab702024-12-12T18:11:17ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132024-12-0115110.1080/19475705.2024.2398111Reliability analysis of reservoir landslides in multi-slip zones considering spatial variability and seepage field fluctuationYucheng Wang0Luqi Wang1Xiangwei Fang2Wengang Zhang3Peixi Xiong4Chao Chen5Xing Zhu6School of Civil Engineering, Chongqing University, Chongqing, ChinaSchool of Civil Engineering, Chongqing University, Chongqing, ChinaSchool of Civil Engineering, Chongqing University, Chongqing, ChinaSchool of Civil Engineering, Chongqing University, Chongqing, ChinaChina Coal Technology and Engineering Chongqing Design and Research Institute (Group) Co., Ltd., Chongqing, ChinaSchool of Civil Engineering, Chongqing University, Chongqing, ChinaState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, ChinaRainfall and reservoir water level fluctuations are recognized as primary triggers of landslide instability in conventional reservoir landslide stability and reliability analyses. However, deterministic methods that treat landslides as homogeneous masses disregard the inherent spatial variability in soil parameters, resulting in inaccurate calculations of landslide failure probabilities. This study investigates the Taping landslide, a multi-slip zone landslide in the Three Gorges Reservoir area. The landslide stability is evaluated using a deterministic analysis method under rainfall and reservoir water level fluctuation conditions. Subsequently, the unsaturated seepage analysis result is incorporated into a random finite difference method computational framework that considers soil spatial variability to assess the landslide reliability. The probabilistic analysis method is employed to examine the impact of spatial variability in soil parameters on the reliability of the reservoir landslide. The results show that landslide stability and reliability are negatively affected by spatial variability of geotechnical parameter. Furthermore, the coefficient of variation, correlation coefficient, and scales of fluctuation for soil shear strength parameters adversely affect the stability and reliability of the landslide to varying degrees. The study results contribute to the assessment of the probability of failure and the implementation of mitigation and prevention measures for the Taping landslide.https://www.tandfonline.com/doi/10.1080/19475705.2024.2398111Reservoir landslidesspatial variabilitylandslide reliabilityprobability of failureseepage field variations |
| spellingShingle | Yucheng Wang Luqi Wang Xiangwei Fang Wengang Zhang Peixi Xiong Chao Chen Xing Zhu Reliability analysis of reservoir landslides in multi-slip zones considering spatial variability and seepage field fluctuation Geomatics, Natural Hazards & Risk Reservoir landslides spatial variability landslide reliability probability of failure seepage field variations |
| title | Reliability analysis of reservoir landslides in multi-slip zones considering spatial variability and seepage field fluctuation |
| title_full | Reliability analysis of reservoir landslides in multi-slip zones considering spatial variability and seepage field fluctuation |
| title_fullStr | Reliability analysis of reservoir landslides in multi-slip zones considering spatial variability and seepage field fluctuation |
| title_full_unstemmed | Reliability analysis of reservoir landslides in multi-slip zones considering spatial variability and seepage field fluctuation |
| title_short | Reliability analysis of reservoir landslides in multi-slip zones considering spatial variability and seepage field fluctuation |
| title_sort | reliability analysis of reservoir landslides in multi slip zones considering spatial variability and seepage field fluctuation |
| topic | Reservoir landslides spatial variability landslide reliability probability of failure seepage field variations |
| url | https://www.tandfonline.com/doi/10.1080/19475705.2024.2398111 |
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