报告详情
Mechanisms of Reservoir Bank Landslides Induced by Water Level Fluctuations and Rainfall
编号：11
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更新：2025-07-21 14:59:13 浏览：6次
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报告开始：暂无开始时间（Asia/Shanghai）
报告时间：暂无持续时间
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摘要
This study investigates the triggering mechanisms of reservoir bank landslides induced by water level fluctuations and rainfall, using the Shenjiagou slope near Baihetan Hydropower Station, China, as a case study. Baihetan Reservoir, with an installed capacity of 1.6×107 kW, has experienced numerous large-scale landslides influenced by complex hydro-mechanical factors. Centrifuge model tests at 30g simulated slope responses to water level fluctuations between 3 cm and 9 cm and high-intensity rainfall equivalent to 128 mm/day. Results show that rising reservoir water levels cause significant toe traction failure and development of tension cracks, resulting in fine particle detachment and macroscopic collapse due to saturation, buoyancy, and particle rearrangement. Subsequent rainfall infiltration through cracks triggers large-scale translational landslides by increasing soil saturation, weight, and seepage pressure, thereby accelerating slope destabilization. Grain size analysis confirms increased fine particle content at the landslide front, supporting the mechanism of pore pressure increase and reduction in effective stress. This research enhances understanding of coupled hydrodynamic effects on reservoir bank stability and provides a scientific basis for hazard assessment and mitigation strategies in high-risk reservoir areas such as Baihetan.
关键词
Reservoir bank slopes,Rainfall,Water level fluctuation,Landslide mechanisms
报告人
Qingxin Zhao
PhD Student Tongji University稿件作者
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重要日期
-
会议日期
08月23日
2025
至08月26日
2025
-
07月21日 2025
初稿截稿日期
-
08月26日 2025
注册截止日期
主办单位
Southwest Jiaotong University, China (SWJTU)
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
承办单位
Southwest Jiaotong University, China (SWJTU)
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
联系方式
- Yufeng Wang
- wa******@swjtu.edu.cn
- +86********
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