Mechanical Properties and Particle Breakage of Uniform-Sized Tailings Material

Tailings dam disasters are reported almost every year and triggered by mechanisms, such as overtopping, piping, others. The failures due to inadequate management cannot be neglected well. These dams constructed mostly in a step-by-step construction method that leads continuously changing state of vertical loads during may lead particle breakage changes strength. Therefore, layer tailings today not the same tomorrow phase. To study effects different on strength, direct shear tests were performed remolded samples separated into sizes. using normal stresses ranged from 50 500 kPa. results indicate finer exhibited slightly more resistance than coarser irrespective deposition method. For normally deposited specimen, dilatant contractant behavior height was observed when effective stress less 300 kPa greater kPa, respectively. Under method, showed subjected friction angle cohesion vertically specimens higher lower, respectively, ones. particles proportional size tailings.