Modeling and optimizing the ultimate pit limit and rampsof Se-Chahun open-pit mine according to economic studies

The design of open-pit mines, following geological stages and the creation of threedimensionaland block models, focuses on determining the final limits. In this regard, currentmethodologies cover the range based on boundaries where the cumulative undiscounted valueof blocks is maximized. However, it is preferable to emphasize the maximization of the currentnet value in the final limit design. Modeling, reserve estimation, and determining the final limitare vital stages in the design of open-pit mines. Determining ore boundaries and estimating thequantity and quality of reserves are fundamental challenges for geologists and miningengineers. To analyze these stages, available information, including exploration data andgeological cross-sections, has been utilized. The use of block modeling, based on slope andlayer extensions, along with precise block delineation, transforms this information into a blockmodel. Reserve estimation has been carried out by conducting statistical and geostatisticalanalyses on exploration data. In this article, the final limit of the Kavak mine has beendetermined by maximizing the current net value using NPV Scheduler and Datamine software.The results obtained include a revenue of $۲۲.۷ billion, a mineral tonnage of ۵۱۳ million tons,operational costs of $۴.۱۳ billion, and ultimately a specific value of $۱۰.۹ billion. Sensitivityanalysis has also been conducted, indicating that if the mineral sales cost and extraction costare lower, and the desired mineral price is higher, the mine will have a higher value.

کلیدواژه ها:

Ultimate Pit Limit ، Net Present Value ، Datamine ، NPV Scheduler ، Optimization