EXPERIMENTAL AND NUMERICAL RESEARCH OF JOINTED ROCK MASS ANISOTROPY IN A THREE-DIMENSIONAL STRESS FIELD

Abstract

Joints often have a significant influence on material characteristics. The discontinuities’ coalescence mechanism and complex jointed rock mass structure as a composite need to be further explored. In this study, compression and shear tests were carried out on a jointed rock mass. The purpose of the jointed rock mass behaviour study was to determine the deformation-strength dependencies and to determine the parameters for a quantitative assessment of the joints’ influence on mechanical characteristics. The results show that compression strength depends on the materials’ structure, and there is a detailed description of the joints’ orientation influence on stress-strain dependencies during compression experiments. The numerical method used in this study could be used for the modelling of composite materials and their properties.

Keywords

• jointed rock mass
• discontinuities
• numerical simulation
• uniaxial compression strength
• anisotropy