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Publicação:
Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysics

dc.contributor.authorArcila, Erika Juliana Aldana [UNESP]
dc.contributor.authorMoreira, César Augusto [UNESP]
dc.contributor.authorCamarero, Pedro Lemos
dc.contributor.authorCasagrande, Matheus Felipe Stanfoca [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Alfenas (UNIFAL)
dc.date.accessioned2021-06-25T10:19:40Z
dc.date.available2021-06-25T10:19:40Z
dc.date.issued2021-03-01
dc.description.abstractPotential problems related to a tailings dam’s stability are a matter of concern, especially where structural failure might endanger nearby communities and the environment. The Osamu Utsumi mine, located in the State of Minas Gerais, is currently not operating. The rock-soil tailings dam has water upwelling downstream in the bedrock, with water flux confined to rock fractures. This research was conducted to identify possible flux zones in the base of the dam using DC resistivity and electrical resistivity tomography (ERT). The data acquisition consisted of five ERT lines with 6 m of spacing between electrodes, using a Schlumberger array. The results are presented by 2D and 3D geophysical models comprising measured and processed resistivity values. It was possible to identify a low resistivity zone (5–20 Ωm), whose structural continuity indicates water infiltration in the bedrock under the dam. Moreover, the results do not indicate that erosion is taking place in the interior of the dam, reducing the risk of geotechnical instability and failure of physical integrity.en
dc.description.affiliationGeosciences and Exact Sciences Institute (IGCE) Universidade Estadual Paulista (UNESP), 24-A Avenue, 1515, Bela Vista
dc.description.affiliationScience and Technology Institute (ICT) Universidade Federal de Alfenas (UNIFAL), José Aurélio Vilela Highway, 11999, Cidade Universitária, Poços de Caldas
dc.description.affiliationUnespGeosciences and Exact Sciences Institute (IGCE) Universidade Estadual Paulista (UNESP), 24-A Avenue, 1515, Bela Vista
dc.format.extent308-319
dc.identifierhttp://dx.doi.org/10.1007/s10230-020-00746-y
dc.identifier.citationMine Water and the Environment, v. 40, n. 1, p. 308-319, 2021.
dc.identifier.doi10.1007/s10230-020-00746-y
dc.identifier.issn1616-1068
dc.identifier.issn1025-9112
dc.identifier.scopus2-s2.0-85098967417
dc.identifier.urihttp://hdl.handle.net/11449/205691
dc.language.isoeng
dc.relation.ispartofMine Water and the Environment
dc.sourceScopus
dc.subject3D model
dc.subjectDC resistivity
dc.subjectERT
dc.subjectMining
dc.titleIdentification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysicsen
dc.titleIdentificación Mediante Geofísica de Zonas de Flujo en el Interior y en el Basamento de una Presa de Colas de una Mina de Uranioes
dc.typeArtigopt
dspace.entity.typePublication
unesp.author.orcid0000-0001-6749-1201[3]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Geociências e Ciências Exatas, Rio Claropt

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