Effect of Anisotropy on Basic and Residual Friction Angles in Schist Rocks

The basic friction angle (φb) tests are a common and practical method used to determine the shear strength of discontinuities. Tilt device is generally in experiments. In this study, effects anisotropy properties green mica schist rocks taken from copper mine site Kastamonu Hanönü district on residual angles were investigated. For purpose, experiments with specially designed tilt conducted dried saturated samples orientation 0°, 15°, 30°, 45°, 60°, 75° 90° relative loading axis. According results conditions, maximum values obtained for at 60°. close each other carried out both conditions. Green less affected by media. Mica not media, all angles. It was determined that lower conditions compared ones.