Characteristics and mechanism of large deformation of a reservoir colluvial landslide-a case study of the Yulinerzu landslide in Xiluodu Reservoir, China
The reactivation of colluvial landslides in reservoir banks poses a serious threat to the safety of hydropower projects and nearby towns. This study aims to research the morphological evolution of this type of landslides under the action of reservoir water and the impact of morphological evolution o...
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Frontiers Media S.A.
2024-01-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1337998/full |
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| author | Jinbing Wei Dikai Wang Zhongkang Yang Zhongkang Yang Jiexiong Wang Yuming Li Wanyu Hu |
| author_facet | Jinbing Wei Dikai Wang Zhongkang Yang Zhongkang Yang Jiexiong Wang Yuming Li Wanyu Hu |
| author_sort | Jinbing Wei |
| collection | DOAJ |
| description | The reactivation of colluvial landslides in reservoir banks poses a serious threat to the safety of hydropower projects and nearby towns. This study aims to research the morphological evolution of this type of landslides under the action of reservoir water and the impact of morphological evolution on landslide stability. The study focused on the Yulinerzu landslide, a large reactivated colluvial landslide in the Xiluodu Reservoir, China. Field surveys were conducted to analyze the geological structure of the landslide. In situ monitoring and surveys were used to obtain the deformation characteristics and morphological evolution of the landslide. A combined seepage-slope stability analysis was conducted to reveal the deformation mechanism. The results show that the reactivation of the Yulinerzu landslide is dominated by reservoir water fluctuations rather than rainfall. The underlying geological condition of the colluvial landslide is its hydrogeological structure, which causes the landslide to deform in a step-like manner during reservoir operation. With the accumulation of displacement and morphology evolution, the landslide displayed self-stabilizing characteristics. Therefore, in the stability analysis and risk assessment of large deformation landslides, it is essential to take into account not only the hydraulic effects of reservoir fluctuation but also the evolution of landslide morphology. |
| first_indexed | 2024-03-08T15:52:04Z |
| format | Article |
| id | doaj.art-d069ac668f674f50ade10835210799f7 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-08T15:52:04Z |
| publishDate | 2024-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-d069ac668f674f50ade10835210799f72024-01-09T04:29:52ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632024-01-011110.3389/feart.2023.13379981337998Characteristics and mechanism of large deformation of a reservoir colluvial landslide-a case study of the Yulinerzu landslide in Xiluodu Reservoir, ChinaJinbing Wei0Dikai Wang1Zhongkang Yang2Zhongkang Yang3Jiexiong Wang4Yuming Li5Wanyu Hu6College of Water Resource and Hydropower, Sichuan University, Chengdu, ChinaPower China Chengdu Engineering Corporation Limited, Chengdu, ChinaCollege of Water Resource and Hydropower, Sichuan University, Chengdu, ChinaPower China Chengdu Engineering Corporation Limited, Chengdu, ChinaPower China Chengdu Engineering Corporation Limited, Chengdu, ChinaPower China Chengdu Engineering Corporation Limited, Chengdu, ChinaPower China Chengdu Engineering Corporation Limited, Chengdu, ChinaThe reactivation of colluvial landslides in reservoir banks poses a serious threat to the safety of hydropower projects and nearby towns. This study aims to research the morphological evolution of this type of landslides under the action of reservoir water and the impact of morphological evolution on landslide stability. The study focused on the Yulinerzu landslide, a large reactivated colluvial landslide in the Xiluodu Reservoir, China. Field surveys were conducted to analyze the geological structure of the landslide. In situ monitoring and surveys were used to obtain the deformation characteristics and morphological evolution of the landslide. A combined seepage-slope stability analysis was conducted to reveal the deformation mechanism. The results show that the reactivation of the Yulinerzu landslide is dominated by reservoir water fluctuations rather than rainfall. The underlying geological condition of the colluvial landslide is its hydrogeological structure, which causes the landslide to deform in a step-like manner during reservoir operation. With the accumulation of displacement and morphology evolution, the landslide displayed self-stabilizing characteristics. Therefore, in the stability analysis and risk assessment of large deformation landslides, it is essential to take into account not only the hydraulic effects of reservoir fluctuation but also the evolution of landslide morphology.https://www.frontiersin.org/articles/10.3389/feart.2023.1337998/fullcolluvial landslidelarge deformationmorphological evolutionimpoundingfilling-drawdown influencecombined seepage-slope stability modeling |
| spellingShingle | Jinbing Wei Dikai Wang Zhongkang Yang Zhongkang Yang Jiexiong Wang Yuming Li Wanyu Hu Characteristics and mechanism of large deformation of a reservoir colluvial landslide-a case study of the Yulinerzu landslide in Xiluodu Reservoir, China Frontiers in Earth Science colluvial landslide large deformation morphological evolution impoundingfilling-drawdown influence combined seepage-slope stability modeling |
| title | Characteristics and mechanism of large deformation of a reservoir colluvial landslide-a case study of the Yulinerzu landslide in Xiluodu Reservoir, China |
| title_full | Characteristics and mechanism of large deformation of a reservoir colluvial landslide-a case study of the Yulinerzu landslide in Xiluodu Reservoir, China |
| title_fullStr | Characteristics and mechanism of large deformation of a reservoir colluvial landslide-a case study of the Yulinerzu landslide in Xiluodu Reservoir, China |
| title_full_unstemmed | Characteristics and mechanism of large deformation of a reservoir colluvial landslide-a case study of the Yulinerzu landslide in Xiluodu Reservoir, China |
| title_short | Characteristics and mechanism of large deformation of a reservoir colluvial landslide-a case study of the Yulinerzu landslide in Xiluodu Reservoir, China |
| title_sort | characteristics and mechanism of large deformation of a reservoir colluvial landslide a case study of the yulinerzu landslide in xiluodu reservoir china |
| topic | colluvial landslide large deformation morphological evolution impoundingfilling-drawdown influence combined seepage-slope stability modeling |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1337998/full |
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