Resumo

COSTA SILVA, Luís Gustavo  e  NAVARRO TORRES, Vidal Félix. Sequenciamento e otimização de operações de perfuração e desmonte - um estudo de caso. REV. MAMYM [online]. 2023, vol.8, n.2, pp.35-42. ISSN 2519-5352.

Abstract Drilling and blasting operations have a wide range of applicability for mineral processing, increasingly requiring the development of studies through critical and analytical analyses aimed at optimizing results. This work sought to optimize an operational unit by dealing with the sequencing of the drilling and blasting operational cycle, seeking both to improve drilling equipment and adherence to the executed mining plan. For this study to be validated a short-term planning analysis was carried out - carried out weekly - demonstrating the potential for gains in the operation. At the end of the project, it was possible to observe that there was a significant reduction in equipment needed for the operation, where previously around 13 drilling rigs was needed and it was found that there was a need for only 9 pieces of equipment, thus reducing costs per hour worked and increasing the operational income of the operation. Therefore, it became feasible finally extrapolate the annual scenario. To interpret and assist with further clarification of the numbers of final equipment, we carried out a Monte Carlo simulation, making it possible to observe the probability of a certain event occurring, as in this case, the overall productivity and the number of equipment (observing the probability of the need for equipment before and after data adaptation by the completed model).

Palavras-chave : mine sequencing; drilling; operating income.

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