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Representações tridimensionais de dados geológico-geotécnicos
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Abstract(s)
O presente trabalho tem como tema a modelação geológico-geotécnica tridimensional, tendo como principal objetivo avaliar a capacidade destes modelos para representar, de forma clara e robusta, as propriedades do subsolo. Após uma análise dos softwares de modelação 3D disponíveis no mercado, foi selecionado um programa da Bentley Systems. Este permite a construção e atualização dinâmica dos modelos ao longo do fluxo de trabalho, possibilitando a inserção contínua de novos dados geotécnicos e geológicos. Com este software, foi possível elaborar diferentes projeções tridimensionais de parâmetros como o grau de alteração dos materiais, o grau de fracturação e os valores das unidades de Lugeon, aplicados ao caso de estudo. A Barragem do Açafal
foi selecionada como objeto de estudo, contando com uma campanha de prospeção que incluiu quatro sondagens com ensaios Lugeon, seis perfis sísmicos e 21 poços de reconhecimento geológico. Estes dados serviram de base para a construção dos modelos apresentados, tendo ainda sido consideradas sondagens adicionais com o objetivo de demonstrar a robustez, adaptabilidade e fiabilidade do software selecionado. Os resultados evidenciam o potencial da modelação 3D na interpretação integrada do subsolo, contribuindo para uma tomada de decisão mais informada em projetos de engenharia.
This work focuses on three-dimensional geological-geotechnical modeling, with the primary objective of evaluating the ability of these models to accurately and robustly represent underground properties. After analyzing the 3D modeling software available on the market, a program from Bentley Systems was selected, which enables the construction and dynamic updating of models throughout the workflow, allowing for the continuous insertion of new geotechnical and geological data. With this software, it was possible to develop various three-dimensional projections of parameters, such as the degree of material alteration, the state of fracturing, and Lugeon unit values, for the case study. The Açafal Dam was selected as the object of study, with an in situ investigation campaign that included four Lugeon tests, six seismic profiles, and 21 geological reconnaissance wells. This data served as the basis for constructing the models presented, and additional surveys were also considered to demonstrate the robustness, adaptability, and reliability of the selected software. The results highlight the potential of 3D modeling in the integrated interpretation of the subsoil, contributing to more informed decision-making in engineering projects.
This work focuses on three-dimensional geological-geotechnical modeling, with the primary objective of evaluating the ability of these models to accurately and robustly represent underground properties. After analyzing the 3D modeling software available on the market, a program from Bentley Systems was selected, which enables the construction and dynamic updating of models throughout the workflow, allowing for the continuous insertion of new geotechnical and geological data. With this software, it was possible to develop various three-dimensional projections of parameters, such as the degree of material alteration, the state of fracturing, and Lugeon unit values, for the case study. The Açafal Dam was selected as the object of study, with an in situ investigation campaign that included four Lugeon tests, six seismic profiles, and 21 geological reconnaissance wells. This data served as the basis for constructing the models presented, and additional surveys were also considered to demonstrate the robustness, adaptability, and reliability of the selected software. The results highlight the potential of 3D modeling in the integrated interpretation of the subsoil, contributing to more informed decision-making in engineering projects.
Description
Keywords
3D Modeling Leapfrog Geo Geological-Geotechnical Modeling Geovisualization Modelação 3D Modelação geológica-geotécnica Geovisualização