ABSTRACT
The objective of the present paper is to investigate the motion constants and the energy consumption of rockfalls in consideration of the sinkage. A series of laboratory experiments was executed in the combination of cylindrical rockfall masses and slope gradients on a flat homogeneous slope made of Toyoura standard sand. As a result, the qualitative influences of the rockfall masses and the slope gradients on the motion constants including the acceleration, the ratio of the residual velocity to free fall and the slip ratio, and the energy consumption including the soil compaction energy and the kinetic energy were clarified.
