REINFORCEMENT OPTIMIZATION IN UNSTABLE ROCK SLOPES BY USING THE METHOD OF REINFORCEMENT OF REQUIRED LEVEL

The Discussion of optimization of reinforcement elements in stabilizing rock slopes, due to the huge cost of such operations and problems caused by landslides and slope instability due to the lack of adequate reinforcement, has been always considered for researchers in the field of Geomechanic and Geotechnic. Therefore in this study the optimal distribution of reinforcement elements on the rock slopes which has the risk of instability in this study has been considered and new methods of reinforcing the required level or DRD method has been used. The purpose of this study is to provide a rational process for the optimum distribution of reinforcing elements that required in unstable rock slopes and especially critical zones. In this method, rock slope has been divided according to geometrical properties and for each zone with regard to geometrical and Geomechanical layer's properties, the coefficients and finally the Influence coefficients matrix is obtained. Also, according to finite element method and numerical modeling of displacement of each zone and then the displacement ratio matrix of divided zone is obtained. Eventually, within a matrix operation, DRD values for each zone obtain and distributions of reinforcement elements are done based on these values. In order to be practical, distribution of optimized reinforcement elements in rock slopes of Siah Bishe Dam has been evaluated.