Experimental study on the coefficient of restitution for the rotational sphere rockfall

Rockfall often collides with the slope during the movement on a slope surface, and the energy dissipation of rockfall collision is used to quantify by the coefficient of restitution (COR) in analysing rockfall trajectory. The coefficient of restitution is one of the most crucial parameters in analysing rockfall hazard, and it can be obtained by field test or laboratory test. The main motion modes of rockfall on the slope are rolling, impact and...