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An important issue in the evaluation of potential hazard related to rockfalls is the quantitative prediction of the traveling distance of the falling blocks, which is necessary to identify the potentially endangered area. This information is also fundamental for the design of appropriate defensive works, which are intended to reduce the potential impact of the landslide on the population and facilities potentially at risk. The design of this type of protective measures typically requires, above all, the quantitative prediction of the final travel distance of the rock masses. Obtaining a reliable estimate of this quantity is complicated by the interaction of the rocks and the slope surface that can affect the behavior of the blocks at the impacts. Recently, several numerical techniques have been developed and applied to this purpose, based on the solution of the Newton's equations of motion for each block. The aim of this work is to compare the performance of two such approaches, namely the Colorado Rockfall Simulation Program (CRSP), and the Discrete Element Method (DEM). 
18th World IMACS / MODSIM Congress, Cairns, Australia 13-17 July 2009
University of Perugia
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