Study on the Tailings Depositional Law and Mechanical Properties in the Dry Beach

In order to describe the depositional law and the mechanical properties of dry beach tailings, the paper used an indoor that the tailings in the dam exist overt classification of particle size, and the end of storehouse agglomerate fine tailings, coarse tailings exists in front of dam instead. Model of deposition distance reveals that the distribution of tailings on dry beach is affected by grain size, the initial flow velocity of pulp, gradient and so on. Mechanical test indicates that the shear strength of medium grain tailings is larger than that of fine particle, which draws a conclusion, that the larger the grain is, the better its mechanics is. And other measures such as reducing velocity of pulp, pulp density, increasing particle size taken can shorten the deposition distance of coarse tailings, improve coarsening phenomenon of dry beach. Research finding the characteristics of the tailings deposition dry beach, which provides reference for multi-scale research and distribution law of sedimentary tailings.