Sensitivity Analysis of Fracture Geometry Parameters on the Mechanical Behavior of Rock Mass with an Embedded Three-Dimensional Fracture Network

The existence of fractures has a significant influence on the mechanical properties rock mass. sensitivity mass’s to fracture’s geometric parameters is conducive improving measurement accuracy fractured mass engineering. Firstly, fracture in dam site area Lianghekou Hydropower Station were counted using ShapeMetriX3D system. Then, effect deformation characteristics, failure mode, and investigated based RFPA3D under uniaxial compression test. results showed that stress–strain curves mainly exhibited elastic-brittle characteristics. pattern was defined by compressive-shear composite. Additionally, compressive strength (UCS) greater than elastic modulus. UCS trace length more significant.