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The article is devoted to assessing the influence of normal and shear stiffness of fractures on the deformation characteristics of the rock mass using the example of the rock mass dissected by a plane-parallel system of fractures. To solve this problem, dependences were used to determine the effective deformation characteristics of the mass according to the deformation characteristics values of rock joints, normal and shear stiffness and, if necessary, the elastic dilatancy coefficient of fractures using the fracture model in the form of a thin layer. These dependences were obtained by the method of asymptotic averaging. The applicability of the dependences used in the article to the determination of the deformation properties of rock masses was shown. It also demonstrated a significant effect of fracture stiffness on the deformation characteristics of the reduced rock mass, and that the greater the deformation modulus of the rock joint, the stronger, ceteris paribus, the effect of fracturing on its deformation characteristics is. |
