Mode-I fracture array evolution and corresponding rock mass properties: A displacement discontinuity boundary element metho

The understanding of fracture network growth and evolution is integral to studies of fluid flow and rock mass engineering behavior. Understanding the processes of fracture growth and development is a logical step towards predicting the engineering behavior of rock and lithified sediments given a specific stress state or engineering condition. Using a two-dimensional displacement discontinuity boundary element (DDBEM) technique, I relate changes in rock mass properties associated with an evolving fracture array by quantifying the effect of fracture network changes on rock mass deformability. During each iteration cycle, each crack in the network is evaluated against a propagation criterion, and changes in the rock mass properties are monitored. The method is verified by relating elastic constants to a non-crack scenario. Results demonstrate the effects of fracturing on rock mass properties for a variety of boundary conditions.