BENCH BLASTING TECHNIQUE IN OPEN PIT MINES AT HOME AND ABROAD

Bench blasting technique in open pit mines at home and abroad is introduced.The recent progress in bench blasting design,computer aided design system,GPS drilling position,pre-charging and other techniques at home and abroad are systematically expounded.The last achievements of bench blasting technique in open pit mines at home and abroad are expatiated in terms of blasting parameters design,charge pattern,initiation system,blasting safety,mechanized loading and computer application etc.Finally,new views on developing bench blasting technique in open pit mines in China are presented.