Tensile Properties and Tensile Failure Criteria of Layered Rocks

Rocks are less resistant to tension than compression or shear. Tension cracks commonly initiate shear failure. The mechanical behavior of layered rocks under has been studied extensively, whereas the tensile still remains uncertain. In this paper, we study effect layer orientation on strength and failure patterns direct indirect through experimental numerical testing (RFPA2D: software Rock Failure Process Analysis). results suggest that dip angle bedding planes significantly affects strength, patterns, progressive deformation rocks. modes specimens indicate obtained by Brazilian disc test is not as accurate test. Therefore, modified Single Plane Weakness (MSPW) criterion proposed predict based tension. analytical predictions MSPW agrees closely with results. rock engineering, can conveniently reflect (such shale, slate, sandstone) satisfactory accuracy.