QUALITY FEATURES AND CONTROL OF ORE STACKING BY BLASTING THAT AFFECT THE EFFECT OF STOPE LEACHING

The paper discusses and analyzes the quality features of ore stacking by blasting such as the ore lumpiness,crack growth extent(ore porosity),ore stack porosity and permeability of ore stack etc.that affect the leaching effect based on the process features of stope leaching and diffusion & mass transfer mechanism of hard rock leaching,defines the quality requirements on ore stacking and proposes accordingly the technical measures to control the quality.