The Influence of Anisotropy Angle on the Strength and Deformation Properties of Artificial Geomaterials and Rocks

Based on laboratory testing of bedded specimens made of artificial geomaterial, meta-siltstone and schist subjected to uniaxial compression and triaxial compression by the Karman scheme, the deformation and strength characteristics of the materials are determined as functions of the bedding angle. The elasticity properties and strength are estimated in accordance with the theoretical model by Salamon and Tien and the Hoek-Brown criterion. For the layered artificial geomaterial, the theoretical model by Salamon and Tien ensures a well-contended estimate of elastic properties. The strength parameter obtained based on the Hoek-Brown criterion is independent of the level of the lateral pressure applied.