BEHAVIOR OF COHESION COEFFICIENTS AND INTERNAL FRICTION ANGLES OF ROCKS DEPENDING ON THE FUNCTIONAL REPRESENTATION OF THE MOHR ENVELOPE
P. A. Tsoi, O. M. Usoltseva
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Rocks, compression, tension, Mohr envelope, cohesion coefficient, angle of internal friction
Abstract
The behavior of cohesion coefficients and internal friction angles depending on the linear or nonlinear representation of the Mohr envelope as a functional dependence of the shear stress on the normal stress is studied. The calculations were based on the reference data concerning ultimate compressive and tensile strength of rocks. The linear dependence was constructed as a tangent drawn to two Mohr circles, and nonlinear dependence - as a relationship recommended by the domestic standard.
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