Some measures for reducing the rate of large boulder in bench blasting of open-pit are introduced in combination with bench blasting operation, dealing with blasting parameter, blasting materials etc. in Yunfu Pyrite Mine.

• 摘要结合云浮硫铁矿台阶爆破生产实践，从影响爆破作用的爆破参数和爆破材料等因素出发，介绍了降低台阶爆破大块率的几种途径。