As obras disponibilizadas nesta Biblioteca Digital foram publicadas sob expressa autorização dos respectivos autores, em conformidade com a Lei 9610/98.
A consulta aos textos, permitida por seus respectivos autores, é livre, bem como a impressão de trechos ou de um exemplar completo exclusivamente para uso próprio. Não são permitidas a impressão e a reprodução de obras completas com qualquer outra finalidade que não o uso próprio de quem imprime.
A reprodução de pequenos trechos, na forma de citações em trabalhos de terceiros que não o próprio autor do texto consultado,é permitida, na medida justificada para a compreeensão da citação e mediante a informação, junto à citação, do nome do autor do texto original, bem como da fonte da pesquisa.
A violação de direitos autorais é passível de sanções civis e penais.
The aim of this work is to compare and analyze different numerical models on the rockfall process with different geometries, to determine the risks to the local infrastructure and population. It was used the software RAMMS and the modeling program PFC3D to simulate rockfall events. The first software was developed by the Swiss institute WSL, it uses the nonsmooth dynamics system, it is a dynamic
behavior where there is no penetration between the rock and the surface and the contact laws are created by restrictions laws. And the second one uses the discrete element method applying the smooth dynamics system to simulate the event. On the first part of the work, numerical models were created on both models to simulate simple cases of rockfall events, to compare the main soil-rock parameter of both modeling program with the distance reached of the rocks. The contact model used on the PFC3D program was the linear method, and after the first simulations was added a rolling resistance force to the model reproduce soft. Both models were applied to real cases, the BR116 was the first case modeled, where some natural hazards have already happened. The results of the numerical simulations were compared and analyzed. It was also created a model to simulate the rockfall event of the Gloria neighborhood, in Petropolis; rocks that could fall were determined and simulations for those blocks were performed, the deposition area and the blocks trajectory of each model were examined. And finally, it was studied the vegetation effect of each model and its particularities. Through the results, it is possible to conclude that the PFC3D can simulate the rockfall process with better accuracy using the rolling resistance method. For both simulation, the BR116 and the Gloria neighborhood, the models showed the same tendency of the blocks trajectory, but it is necessary to improve the calibration of the rolling resistance coefficient. The existence of the vegetation revealed as a very effect lose energy mechanism on the system, decreasing significantly the velocity of the blocks.