ABSTRACT

ABSTRACT: The behavior of rock masses near underground openings can be influenced by the presence of major geological discontinuities. To model such discontinuities, the ground control engineer must rely on constitutive equations to describe their complex mechanical behavior. This paper presents stability analyses of an underground stope near a fault, using a recently developed non-linear model for the discontinuity. This model, called CSDS, can represent the behavior of rock discontinuities in the pre-peak as well as in the post-peak regions. A parametric investigation of the case presented shows that induced stresses around the excavation are greatly influenced by the post-peak characteristics of the fault.

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