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Universidade de Brasília
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dc.contributor.authorSoares, Erick Rógenes Simão-
dc.contributor.authorGomes, Alessandra dos Santos-
dc.contributor.authorFarias, Márcio Muniz de-
dc.contributor.authorFávero Neto, Alomir Hélio-
dc.contributor.authorFreire, Germán Marcelo Martins Vinueza-
dc.contributor.authorRasmussen, Leandro Lima-
dc.date.accessioned2026-05-07T20:21:30Z-
dc.date.available2026-05-07T20:21:30Z-
dc.date.issued2024-
dc.identifier.citationKOMODROMOS, Michail et al. Implementation of linear strain elements for image-based Finite Element Analysis of cemented natural sand. Computers and Geotechnics, [s. l.], v. 174, p. 106606, out. 2024. DOI: https://doi.org/10.1016/j.compgeo.2024.106606. Disponível em: https://www.sciencedirect.com/science/article/pii/S0266352X24006062. Acesso em: 23 maio 2024.-
dc.identifier.issn0266-352X-
dc.identifier.urihttp://repositorio.unb.br/handle/10482/54337-
dc.publisherElsevier-
dc.sourceComputers and Geotechnics-
dc.titleThe impact of discontinuities on spalling failure in excavations under high-stress conditions-
dc.identifier.doihttps://doi.org/10.1016/j.compgeo.2024.106667-
dc.description.abstract1The Continuum Voronoi Block Model (CVBM), a pseudo-discontinuum modeling technique based on the Finite Element Method, was employed to investigate the impact of discontinuities on spalling phenomena around excavations in rocks under high-stress conditions. The CVBM’s ability to produce numerical results consistent with spalling was demonstrated through a case study of the Mine-by tunnel. The results show that the model can explicitly capture the formation of macro-fractures parallel to excavation walls, intact rock slabs, and V-shaped notches. The results of this case study support the application of CVBM for parametric analyses to investigate the role of discontinuities in spalling failure, integrating discrete fracture network (DFN) into the model. The influence of DFN parameters such as dip angle, spacing, persistence, position, and mechanical properties is also evaluated. It was found that discontinuities promote stress relief due to shear, thereby altering spalling damage around the excavation in highly stressed rock. This finding highlights the crucial role of discontinuities in influencing the behavior of excavations under such conditions.-
dc.abstractThe Continuum Voronoi Block Model (CVBM), a pseudo-discontinuum modeling technique based on the Finite Element Method, was employed to investigate the impact of discontinuities on spalling phenomena around excavations in rocks under high-stress conditions. The CVBM’s ability to produce numerical results consistent with spalling was demonstrated through a case study of the Mine-by tunnel. The results show that the model can explicitly capture the formation of macro-fractures parallel to excavation walls, intact rock slabs, and V-shaped notches. The results of this case study support the application of CVBM for parametric analyses to investigate the role of discontinuities in spalling failure, integrating discrete fracture network (DFN) into the model. The influence of DFN parameters such as dip angle, spacing, persistence, position, and mechanical properties is also evaluated. It was found that discontinuities promote stress relief due to shear, thereby altering spalling damage around the excavation in highly stressed rock. This finding highlights the crucial role of discontinuities in influencing the behavior of excavations under such conditions.-
dc.contributor.affiliationUniversidade de Brasília, Faculdade de Tecnologia, Engineering, Avenue Professor Mário Werneck, 60, Belo Horizonte, MG, Bucknell University,-
dc.contributor.affiliationDF+ Engineering, Avenue Professor Mário Werneck, 60, Belo Horizonte, MG, Brazil-
dc.contributor.affiliationUniversidade de Brasília, Faculdade de Tecnologia-
dc.contributor.affiliationBucknell University, 1 Dent Drive, Lewisburg, PA 17837, USA-
dc.contributor.affiliationUniversidade de Brasília, Faculdade de Tecnologia-
dc.contributor.affiliationUniversidade de Brasília, Faculdade de Tecnologia-
dc.description.unidadeFaculdade de Tecnologia (FT)-
dc.description.unidadeDepartamento de Engenharia Civil e Ambiental-
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