Loading...
Publication
Implementação de equipamentos de controlo de desvios de perfuração
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 10.98 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Esta dissertação analisa o controlo de desvios em furos de produção através de um desviómetro, um equipamento da O-Pitblast S.A., que mede a inclinação, azimute e profundidade dos furos de perfuração em minas, não metálicas, e pedreiras a céu aberto. A trajetória dos furos de perfuração é essencial nas áreas de Engenharia de Minas, Geologia Mineira, Geotecnia e Engenharia Civil, sendo fundamental para a qualidade do desmonte. O estudo foca-se na importância de um planeamento adequado, os parâmetros dos furos e a geometria do plano de fogo, e no impacto da precisão da perfuração na eficiência do desmonte e nas operações subsequentes. A otimização do desmonte depende da compreensão da compartimentação do maciço rochoso e da aplicação de explosivos de forma adequada. Embora a redução dos desvios na perfuração seja importante, este estudo mostra que isso, por si só, não garante uma fragmentação eficiente. Ao longo de quatro desmontes realizados entre junho e agosto de 2024, foram identificadas lacunas e sugeridas correções no planeamento, destacando a necessidade de controle rigoroso dos desvios para uma melhor distribuição de explosivos e resultados mais eficientes. Assim sendo, ficou provado que através do acompanhamento e análise dos resultados dos desmontes PF30, PF33, PF34 foi possível um melhor planeamento para o PF35. A medição dos desvios de perfuração tornou-se o fator chave para o conhecimento da qualidade de perfuração e consequente minimização dos seus efeitos negativos.
This work analyses the control of deviations in production boreholes using a bore track, a piece of equipment from O-Pitblast SA that measures the inclination, azimuth, and depth of boreholes in open-pit non-metallic mines and quarries. The trajectory of drill holes is essential in Mining Engineering, Mining Geology, Geotechnics, and Civil Engineering and is fundamental to the blasting quality. The study focuses on the importance of proper planning, considering geological and geotechnical factors and the geometry of the fire plane, and the impact of drilling accuracy on blasting efficiency and subsequent operations. Optimizing blasting depends on understanding the compartmentalization of the rock mass and applying explosives appropriately. Although reducing drilling deviations is essential, this study shows that this alone does not guarantee efficient fragmentation. Throughout four blasts carried out between June and August 2024, shortcomings were identified, and corrections in planning were suggested, highlighting the need for strict control of deviations for better explosive distribution and more efficient results. This proved that by monitoring and analysing the results of the PF30, PF33 and PF34 blastholes, it was possible to improve planning for PF35. The measurement of drilling deviations was the key to understanding the quality of drilling and consequently minimising its negative effects.
This work analyses the control of deviations in production boreholes using a bore track, a piece of equipment from O-Pitblast SA that measures the inclination, azimuth, and depth of boreholes in open-pit non-metallic mines and quarries. The trajectory of drill holes is essential in Mining Engineering, Mining Geology, Geotechnics, and Civil Engineering and is fundamental to the blasting quality. The study focuses on the importance of proper planning, considering geological and geotechnical factors and the geometry of the fire plane, and the impact of drilling accuracy on blasting efficiency and subsequent operations. Optimizing blasting depends on understanding the compartmentalization of the rock mass and applying explosives appropriately. Although reducing drilling deviations is essential, this study shows that this alone does not guarantee efficient fragmentation. Throughout four blasts carried out between June and August 2024, shortcomings were identified, and corrections in planning were suggested, highlighting the need for strict control of deviations for better explosive distribution and more efficient results. This proved that by monitoring and analysing the results of the PF30, PF33 and PF34 blastholes, it was possible to improve planning for PF35. The measurement of drilling deviations was the key to understanding the quality of drilling and consequently minimising its negative effects.
Description
Keywords
Perfuração Desvios Otimização Fragmentação Acompanhamento Desvios Monitorização Drilling Deviation Optimisation Fragmentation Monitoring