Abstract
This paper presents a method for the evaluation of the rock capturing performance of a grid-shaped steel check dam. The evaluation method is based on the probabilistic estimation of the number of rocks passing through the grid; this number follows a random geometric dist ribution. In order to predict the probability of the plugging of the grid by the rocks, the plugging phenomena were defined on the basis of the geometrical combinations and arrangement of rocks; the probabilities of these plugging phenomena were simulated through the Monte Carlo simulation method. The coefficient used in the proposed method is fit to the experimental results. Finally, the capturing performance and robust ness of some actual check dams were evaluated using the proposed method.
