Study of Anti-Sliding Stability of a Dam Foundation Based on the Fracture Flow Method with 3D Discrete Element Code

According to the geological conditions of Capulin San Pablo hydropower station in Costa Rica, the hydraulic-mechanical coupling model is established by using the discrete element method based on the seepage theory of a fractured rock mass. [...]the Navier-Stokes equations are difficult to solve using nonlinear partial differential equations. [...]a simplified treatment is usually used; namely, the local cubic law (LCL) that approximates a three-dimensional flow field into a two-dimensional flow field (zero velocity in the z direction) by the Stokes equation. The hydraulic-mechanical coupling of a fractured rock mass is complex, and it is difficult to obtain accurate solutions for it. [...]the development of computer numerical methods provides an important method of hydraulic coupling analysis. [...]the stability of the dam foundation under seepage conditions was discussed.