Numerical Investigation on the Correspondence between the Damping and Coefficient of Restitution (COR) in Rockfall Movement
Source abstract
Abstract
The rockfall process is characterized by bounces of a block on the ground. The coefficient of restitution (COR), which indicates the degree of rockfall energy dissipation, has a significant effect on the rockfall trajectory. The 3-dimensional Distinct Element Code (3DEC) is an effective tool to study the rockfall trajectory, and the damping can reflect the COR in numerical modeling. However, the relationship between damping and COR is not understood. A field test is numerically modelled to investigate the correspondence between damping and COR. A series of damping–COR correspondences are obtained and compared with the field test and its previous numerical simulation to verify the rationality of the correspondences. Then, the damping–COR correspondence is adopted in a typical rockslide in Yunnan province, China. The numerical results show that the proposed method is in good agreement with practical engineering. This study provides a new method for predicting rockfall trajectory.
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Research context
OpenAlex topics: Landslides and related hazards · Rock Mechanics and Modeling · Dam Engineering and Safety
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Engineering & Technology, China University of Geosciences (Beijing), Beijing 100083, China
Funding
National Key Research and Development Plan of China · Ministry of Science and Technology of China · Hami Municipal Bureau of Science and Technology
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