四川某铁矿扇形炮孔布置形式分析与规范化研究

Analysis and standardization of fan-shaped bore layout in an iron ore in Sichuan

对无底柱分段崩落法扇形炮孔爆破的边界条件进行了详细分析,并针对缓倾斜中厚矿体条件下的炮排布孔方式和爆破方式进行了优化改进及规范化研究,形成了缓倾斜中厚矿体下的扇形孔的标准布置形式,并成功应运于四川某铁矿,取得了良好的效果。

This paper analyzed the boundary conditions of fan hole blasting in pillar-less sublevel caving in an iron ore in Sichuan and optimized, standardized the blast hole layout and blasting pattern for the gently inclined orehody to develop the standard layout of fan hole for the gently inclined orebody,which was suc- essfully applied in an iron mine in Sichuan with favourable re- sults.