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

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 orebody to develop the standard layout of fan hole for the gently inclined orebody,which was sucessfully applied in an iron mine in Sichuan with favourable results.