Application of deep hole blasting technology in stope leaching

Mining low grade uranium deposit by stope leaching method is technically feasible and low cost. The practice has proved that the stacking of blasting fragmentation is one of the main factors that directly affect leaching effect. Based on the specific environment and safety, clattering blasting heap size, improving the quality of the heap of stope leaching process become extremely critical issue.Based on the study and practice of blasting railway construction and open-pit mining, combined with a uranium mine in Gannan resource conditions and the actual situation of production, application and exploration test of deep hole blasting in of heap construction technology, the results show that the bulk yield can be greatly reduced, quality and heap stope leaching effect can be improved. (authors)