关键词: 深水炮孔, 台阶爆破, 爆破优化

Abstract: With the yearly increase of the depth of open-pit mining, the water infiltration of borehole can not be ignored. The paper analyzes the effect of the water in boreholes on blasting effect and discusses its technical route. In light of the reality of Shougang Iron Mine and by making use of the incompressibility and good energy transmission of water medium, large space borehole pattern and comprehensive blasting optimizing technology were adopted. As a result, the blasting output per meter hole was raised and the blasting effect removed, achieving significant achievement in exploring efficient blasting of deep-water borehole.

Key words: Deep water borehole, Bench blasting, Blasting optimization