PHOTOELASTIC STUDY ON THE MECHANICAL-PROPERTIES OF FRACTAL ROCK JOINTS

In this paper, the fractal rock joints are manufactured on the photoel astic material plate. Based on the visualized photoelastic experiments , the mechanical properties of the fractal joints with different rough ness (different fractal dimensions) are investigated under uniaxial an d shear compression. The research results indicate that the joint roug hness (the fractal dimension of the joints) significantly influences t he peak shear strength, the position of the maximum shear stress, and the number of contact points.