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Model test study on centroid frequency evolution of reservoir landslide under water level fluctuations
Zhixiang Wu1, Guobao Zhang2, Mowen Xie3
1PowerChina Beijing Engineering Corporation Limited, Beijing, 100020, China. wuzhizhixiang@163.com.
Scientific Reports
|March 9, 2026
Summary
Centroid frequency depression in reservoir landslides signals decreasing stability. Faster water level fluctuations amplify these frequency variations, offering potential for early landslide warnings.
Area of Science:
- Geotechnical Engineering
- Earthquake Engineering
- Seismology
Background:
- Reservoir landslides pose significant risks, influenced by cyclic water level fluctuations.
- Understanding landslide dynamics is crucial for effective monitoring and early warning systems.
Purpose of the Study:
- To investigate the evolution of centroid frequency in reservoir landslides under cyclic water level fluctuations.
- To assess the potential of centroid frequency as an early-warning indicator for landslide failure.
Main Methods:
- Theoretical analysis of wave attenuation in viscoelastic media.
- Physical model tests simulating landslide evolution under varying water-level fluctuation rates.
- Analysis of centroid frequency variations during landslide processes.
Main Results:
- Water-level fluctuations decrease landslide stability, leading to centroid frequency depression.
- Faster fluctuation rates result in more pronounced centroid frequency variations.
- A downward trend in centroid frequency exceeding 7 Hz preceded landslide failure, suggesting early-warning potential.
Conclusions:
- Centroid frequency depression is linked to reduced landslide stability, not direct water-level effects.
- Centroid frequency shows promise as an early-warning indicator for reservoir landslides.
- Further validation is needed to establish the reliability and general applicability of centroid frequency as a warning metric.
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