To explore the percolation regulation and inducement of waste fine particles in ore drawing by the block caving method,a simulation is undertaken by using discrete element method software EDEM. This simulation contains coarse-to-fine particle amount ratio,diameter ratio and moisture content,and sets marker particles in different regions to trace the migration of adjacent coarse and fine particles. The results indicate that the ore-drawing advance dilution rate decreases with increasing coarse-to-fine partic...