Nonlinear Dynamic Analysis of Macroscopic Fracture of Limestone in General Experiments

The ultimate fracture of rock depends on flows which rock contains, and the process of fracture is nonlinear and unbalanced. Materials like rocks are inhomogeneous, and geometric shapes of crack are usually complicated and irregular. The macroscopic fracture of limestone is studied by using SWA-2000 Electro-hydraulic Servo-controlled Rock Mechanics Testing System and fractal geometric methods. The results indicate that the magnitude of confining pressure is related to the fractal dimension, and macroscopic fracture can be described quantitatively by using fractal geometric methods.