大倾角下山掘进炮眼布置优化设计

Big dip downward tunnelling blastholes layout optimization design

普通钻爆法大角度下山掘进普遍存在爆破后底高现象,生产效率低、成本高。通过对大角度下山炮眼布置的优化设计,有效控制了下山掘进底高现象,提高了生产效率,具有较好的推广应用价值。

The common drilling and blasting method generally has the phenomenon of high background, lowproduction efficiency and high cost. Through to large angle down the blast hole layout optimization design, effectivecontrol of the downward tunnelling at the bottom of the tunneling phenomenon, improves the production efficiency,has good popularization and application value.