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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.citationRÓGENES, Erick et al. The impact of discontinuities on spalling failure in excavations under high-stress conditions. Computers and Geotechnics, [S. l.], v. 175, 106607, nov. 2024. DOI: https://https://doi.org/10.1016/j.compgeo.2024.106667. Disponível em: https://www.sciencedirect.com/science/article/pii/S0266352X24006062?via%3Dihub. Acesso em: 7 maio 2026.-
dc.identifier.urihttp://repositorio.unb.br/handle/10482/54337-
dc.language.isoeng-
dc.publisherElsevier-
dc.rightsAcesso Restrito-
dc.titleThe impact of discontinuities on spalling failure in excavations under high-stress conditions-
dc.subject.keywordEscavações subterrâneas-
dc.subject.keywordModelo continuo de blocos Voronoi-
dc.subject.keywordRede de fraturas discretas-
dc.identifier.doihttps://doi.org/10.1016/j.compgeo.2024.106667-
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0266352X24006062?via%3Dihub-
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.identifier.orcidhttps://orcid.org/0000-0001-7272-2721-
dc.identifier.orcidhttps://orcid.org/0000-0002-1202-2958-
dc.contributor.affiliationUniversity of Brasília, Faculty of Tecnology-
dc.contributor.affiliationDF+ Engineering, Avenue Professor Mário Werneck, 60, Belo Horizonte, MG, Brazil-
dc.contributor.affiliationBucknell University, 1 Dent Drive, Lewisburg, PA 17837, USA-
dc.contributor.affiliationDF+ Engineering, Avenue Professor Mário Werneck, 60, Belo Horizonte, MG, Brazil-
dc.contributor.affiliationUniversity of Brasília, Faculty of Tecnology-
dc.contributor.affiliationBucknell University, 1 Dent Drive, Lewisburg, PA 17837, USA-
dc.contributor.affiliationUniversity of Brasília, Faculty of Tecnology-
dc.contributor.affiliationUniversity of Brasília, Faculty of Tecnology-
dc.contributor.orcidhttps://orcid.org/0000-0001-7272-2721-
dc.description.unidadeFaculdade de Tecnologia (FT)-
dc.description.unidadeDepartamento de Engenharia Civil e Ambiental (FT ENC)-
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