Optimisation de la fragmentation et des paramètres de minage dans la mine à ciel ouvert de KOV

This thesis focuses on the optimization of drilling and blasting parameters in the KOV open-pit mine, more specifically in the CUT5A1 area. Field data analysis revealed that the current fragmentation produces average particle sizes of 130 cm ou 1300 mm, leading to high processing costs and reduced efficiency. By applying linear regression and analytical models such as Kuz-Ram and Rosin-Rammler, blasting parameters were optimized, resulting in average particle sizes of about 37 cm 370 mm, representing an improvement of 71.5 %. This optimization reduced crushing costs by 40 %, increased overall productivity by 25 %, lowered energy consumption by 18 %, and improved safety by reducing vibration and projection risks by 30 %. The study demonstrates that sustainable mining operations depend on precise control of technical parameters combined with analytical and numerical approaches.