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Modelling of Overtopping and Erosion of Embankment Dams on a Drum Centrifuge
A drum centrifuge accommodates a long soil model in its drum, hence models distributed geotechnical problems better than a beam centrifuge. A modular package has been designed for the HKUST 870 g-ton drum centrifuge to simulate overtopping and erosion of embankment dams. For the sake of space-saving and convenient operation, 1/6 of the drum model channel is designed as a fluid storage tank. The fluid storage tank is sealed by a top cover, and controlled by a fixed baffle and a movable baffle driven by a three-dimensional centrifuge actuator. After the drum centrifuge spins to the design speed, the movable baffle can be lifted by the actuator to release the fluid into the reservoir of the embankment. The rising rate of the water level can be controlled by adjusting the lifted height of the baffle. The embankment can then be overtopped. High-speed cameras and a PICV system will be employed to monitor the erosion or break process of the embankment. Pore pressure sensors are installed inside the embankment to measure the pore pressure response.
Modelling of Overtopping and Erosion of Embankment Dams on a Drum Centrifuge
A drum centrifuge accommodates a long soil model in its drum, hence models distributed geotechnical problems better than a beam centrifuge. A modular package has been designed for the HKUST 870 g-ton drum centrifuge to simulate overtopping and erosion of embankment dams. For the sake of space-saving and convenient operation, 1/6 of the drum model channel is designed as a fluid storage tank. The fluid storage tank is sealed by a top cover, and controlled by a fixed baffle and a movable baffle driven by a three-dimensional centrifuge actuator. After the drum centrifuge spins to the design speed, the movable baffle can be lifted by the actuator to release the fluid into the reservoir of the embankment. The rising rate of the water level can be controlled by adjusting the lifted height of the baffle. The embankment can then be overtopped. High-speed cameras and a PICV system will be employed to monitor the erosion or break process of the embankment. Pore pressure sensors are installed inside the embankment to measure the pore pressure response.
Modelling of Overtopping and Erosion of Embankment Dams on a Drum Centrifuge
Springer Ser.Geomech.,Geoengineer.
Zhang, Jian-Min (editor) / Zhang, Limin (editor) / Wang, Rui (editor) / Lu, Wenjun (author) / Zhang, Limin (author)
The International Conference on Embankment Dams ; 2020 ; Beijing, China
2020-04-21
5 pages
Article/Chapter (Book)
Electronic Resource
English
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