Abstract
Mechanical behaviors of geological material are governed by the existences and behaviors of microstructures such as joints or microcracks in rock mass. During cavern excavation, not only the mechanical properties but also permeability of jointed rock mass are changed due to joint deformation. In this article, the coupled modeling of deformation and flow of the jointed rock mass is carried on the basis of the Micromechanics-Based Continuum approach (MBC approach). The derived model is implemented into the MBC analysis, which enables us to carry the excavation analysis of a cavern and obtain the distribution of displacement, stress, strain and permeability of rock mass and the deformation of joints.
