Paper (In Japanese)
QUANTIFICATION OF THE EFFECT OF ROCK SHAPE PROPARTIES ON THE DISTRIBUTION CHARACTERISTICS OF ROCKFALL RUN-OUT
2022 Volume 78 Issue 3 Pages 210-224
Details
2022 Volume 78 Issue 3 Pages 210-224
This study aims to analyse the relationships between rock shapes and distribution characteristics of rockfall run-out. A series of rockfall simulations is performed using the Discrete Element Method (DEM). 36 rock models with different shapes were defined by changing the geometrical parameters that were aspect ratio, oblateness, and cut ratio. A total of 200 simulations are carried out for each rock model to obtain the distribution of the final run-out position. The sphericity was employed for analysing the contributions of rock shape, and the relation between the sphericity and the distribution characteristics of rockfall run-out was analysed. According to the result, it was found that the effect of rock shapes on distribution characteristics of rockfall run-out can be expressed in a unified manner using two types of sphericity.
