Abstract
This paper developed a rock fall simulation by using discontinuous deformation analysis (DDA). In the simulation, the energy loss of rock fall was expressed respectively in response to every movement feature of rock fall by using absolute parameter. The energy losses of the rock fall were categorized to three forms of the energy loss in friction, the energy loss considering collision and the energy loss by vegetation. The energy loss model by using absolute parameter have been built in the DDA method. Additionally, using the improved DDA, the simulation of field rock fall experiments was performed. The results of the movement feature, velocity and the jump height of the rock fall were in good agreement with the field experiment. Herewith, the new technique considering the slope absorbability, vegetation condition and shapes of the falling rock block has been established a new methodology for design of road disaster prevention of rock falls.
