Abstract
Distribution of the pre-existing cracks has an influence on fracture patterns in rock mass. Although this complex distribution can be considered on the basis of the Discrete Fracture Network (DFN) model, there are no numerical techniques with which we can simulate a rock mass with both high accuracy and high robustness for crack propagation based on the model. In this study, we propose a novel discrete crack propagation analysis method for the DFN model. In this method, the pre-existing cracks are assumed at edges of triangular element, and both of the Generalized finite element approximation for continuous areas and the Moving Least Squares approximation for discontinuous ones are employed. Some numerical examples by using the proposed method are shown in this paper.
