Theoretical and experimental study of along-slope granular flow due to seismic shaking
Date Issued
2016
Date
2016
Author(s)
Yeh, Hsin-Yi
Abstract
Earthquakes can affect the stability of slope and trigger landslides. In this study, both theoretical and experimental analysis are used to comprehend the flows behavior of the slope under seismic conditions. Though theory, we develop a depth-integrated equations with the assumption of conservation of kinetic energy, mass and momentum. To solve the granular flow equations, we derive the numerical models from the local equations and the depth-integrated equations. A series of experiments is conducted on a shaking table, which can simulate the seismic vibration. We use the images from experiments and the particle tracking velocimetry (PTV) method to acquire the velocity fields, the depth of flow layer and the time-evolving variables. Using these approach, we develop a model that can be used to estimate the behavior of slope under seismic conditions. Through the theory and experiment results, we can know more about the mechanism of landslides once the shaking conditions are given.
Subjects
Seismic slope behavior
Granular flow
Shaking table model
Particle tracking velocimetry
Type
thesis
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