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

Detalhes bibliográficos
Autor(a) principal: Arcila, Erika Juliana Aldana [UNESP]
Data de Publicação: 2021
Outros Autores: Moreira, César Augusto [UNESP], Camarero, Pedro Lemos, Casagrande, Matheus Felipe Stanfoca [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s10230-020-00746-y
http://hdl.handle.net/11449/205691
Resumo: Potential 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.
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spelling Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using GeophysicsIdentificación Mediante Geofísica de Zonas de Flujo en el Interior y en el Basamento de una Presa de Colas de una Mina de Uranio3D modelDC resistivityERTMiningPotential 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.Geosciences and Exact Sciences Institute (IGCE) Universidade Estadual Paulista (UNESP), 24-A Avenue, 1515, Bela VistaScience and Technology Institute (ICT) Universidade Federal de Alfenas (UNIFAL), José Aurélio Vilela Highway, 11999, Cidade Universitária, Poços de CaldasGeosciences and Exact Sciences Institute (IGCE) Universidade Estadual Paulista (UNESP), 24-A Avenue, 1515, Bela VistaUniversidade Estadual Paulista (Unesp)Universidade Federal de Alfenas (UNIFAL)Arcila, Erika Juliana Aldana [UNESP]Moreira, César Augusto [UNESP]Camarero, Pedro LemosCasagrande, Matheus Felipe Stanfoca [UNESP]2021-06-25T10:19:40Z2021-06-25T10:19:40Z2021-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article308-319http://dx.doi.org/10.1007/s10230-020-00746-yMine Water and the Environment, v. 40, n. 1, p. 308-319, 2021.1616-10681025-9112http://hdl.handle.net/11449/20569110.1007/s10230-020-00746-y2-s2.0-85098967417Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMine Water and the Environmentinfo:eu-repo/semantics/openAccess2021-10-22T13:22:14Zoai:repositorio.unesp.br:11449/205691Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:37:05.896970Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysics
Identificación Mediante Geofísica de Zonas de Flujo en el Interior y en el Basamento de una Presa de Colas de una Mina de Uranio
title Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysics
spellingShingle Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysics
Arcila, Erika Juliana Aldana [UNESP]
3D model
DC resistivity
ERT
Mining
title_short Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysics
title_full Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysics
title_fullStr Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysics
title_full_unstemmed Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysics
title_sort Identification of Flow Zones Inside and at the Base of a Uranium Mine Tailings Dam Using Geophysics
author Arcila, Erika Juliana Aldana [UNESP]
author_facet Arcila, Erika Juliana Aldana [UNESP]
Moreira, César Augusto [UNESP]
Camarero, Pedro Lemos
Casagrande, Matheus Felipe Stanfoca [UNESP]
author_role author
author2 Moreira, César Augusto [UNESP]
Camarero, Pedro Lemos
Casagrande, Matheus Felipe Stanfoca [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Federal de Alfenas (UNIFAL)
dc.contributor.author.fl_str_mv Arcila, Erika Juliana Aldana [UNESP]
Moreira, César Augusto [UNESP]
Camarero, Pedro Lemos
Casagrande, Matheus Felipe Stanfoca [UNESP]
dc.subject.por.fl_str_mv 3D model
DC resistivity
ERT
Mining
topic 3D model
DC resistivity
ERT
Mining
description Potential 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.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-25T10:19:40Z
2021-06-25T10:19:40Z
2021-03-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s10230-020-00746-y
Mine Water and the Environment, v. 40, n. 1, p. 308-319, 2021.
1616-1068
1025-9112
http://hdl.handle.net/11449/205691
10.1007/s10230-020-00746-y
2-s2.0-85098967417
url http://dx.doi.org/10.1007/s10230-020-00746-y
http://hdl.handle.net/11449/205691
identifier_str_mv Mine Water and the Environment, v. 40, n. 1, p. 308-319, 2021.
1616-1068
1025-9112
10.1007/s10230-020-00746-y
2-s2.0-85098967417
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Mine Water and the Environment
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 308-319
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129443939483648

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