Geophysical investigation of earth dam using the electrical tomography resistivity technique
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/0370-44672016700099 http://hdl.handle.net/11449/158075 |
Resumo: | Abstract Dams are structures that dam rivers and streams for a variety of purposes. These structures often need to be sturdy to withstand the force of the impoundment and the high values of accumulated water load. The constant maintenance of these structures is essential, since a possible accident can lead to damage of catastrophic proportions. This research presents an alternative cheap and quick application for investigating water seepage in earth dams, through the application of the DC resistivity geophysical method from the electrical resistivity tomography (ERT) technique in Wenner array. Three ERT lines were placed parallel to the longitudinal axis of a dam formed by clay soil from the decomposition of diabase. The data are presented in 2D and pseudo-3D geophysical images with electrical resistivity values modeled. Based on the physical principle of electrolytic conduction, that is, decrease in electrical resistance in materials or siliceous minerals in moisture conditions as compared to the material in the dry state, the results revealed low-resistivity zones restricted to some points, associated with water infiltration in the transverse direction of the dam. The absence of evidence as water upwelling on the front of the dam together with geophysical evidence indicate saturation restricted to some points and low probability at the present time, for installation of piping processes. |
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Geophysical investigation of earth dam using the electrical tomography resistivity techniqueinternal erosiongeophysicsdamselectrical resistivityAbstract Dams are structures that dam rivers and streams for a variety of purposes. These structures often need to be sturdy to withstand the force of the impoundment and the high values of accumulated water load. The constant maintenance of these structures is essential, since a possible accident can lead to damage of catastrophic proportions. This research presents an alternative cheap and quick application for investigating water seepage in earth dams, through the application of the DC resistivity geophysical method from the electrical resistivity tomography (ERT) technique in Wenner array. Three ERT lines were placed parallel to the longitudinal axis of a dam formed by clay soil from the decomposition of diabase. The data are presented in 2D and pseudo-3D geophysical images with electrical resistivity values modeled. Based on the physical principle of electrolytic conduction, that is, decrease in electrical resistance in materials or siliceous minerals in moisture conditions as compared to the material in the dry state, the results revealed low-resistivity zones restricted to some points, associated with water infiltration in the transverse direction of the dam. The absence of evidence as water upwelling on the front of the dam together with geophysical evidence indicate saturation restricted to some points and low probability at the present time, for installation of piping processes.Universidade Estadual Paulista Departamento de Geologia AplicadaUniversidade Estadual Paulista Departamento de Geologia AplicadaFundação GorceixUniversidade Estadual Paulista (Unesp)Camarero, Pedro LemosMoreira, Cesar Augusto2018-11-12T17:28:12Z2018-11-12T17:28:12Z2017-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article47-52application/pdfhttp://dx.doi.org/10.1590/0370-44672016700099REM - International Engineering Journal. Fundação Gorceix, v. 70, n. 1, p. 47-52, 2017.2448-167Xhttp://hdl.handle.net/11449/15807510.1590/0370-44672016700099S2448-167X2017000100047S2448-167X2017000100047.pdf90868573123910800000-0002-6949-6679SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengREM - International Engineering Journalinfo:eu-repo/semantics/openAccess2023-11-01T06:09:28Zoai:repositorio.unesp.br:11449/158075Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:35:53.345768Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Geophysical investigation of earth dam using the electrical tomography resistivity technique |
title |
Geophysical investigation of earth dam using the electrical tomography resistivity technique |
spellingShingle |
Geophysical investigation of earth dam using the electrical tomography resistivity technique Camarero, Pedro Lemos internal erosion geophysics dams electrical resistivity |
title_short |
Geophysical investigation of earth dam using the electrical tomography resistivity technique |
title_full |
Geophysical investigation of earth dam using the electrical tomography resistivity technique |
title_fullStr |
Geophysical investigation of earth dam using the electrical tomography resistivity technique |
title_full_unstemmed |
Geophysical investigation of earth dam using the electrical tomography resistivity technique |
title_sort |
Geophysical investigation of earth dam using the electrical tomography resistivity technique |
author |
Camarero, Pedro Lemos |
author_facet |
Camarero, Pedro Lemos Moreira, Cesar Augusto |
author_role |
author |
author2 |
Moreira, Cesar Augusto |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Camarero, Pedro Lemos Moreira, Cesar Augusto |
dc.subject.por.fl_str_mv |
internal erosion geophysics dams electrical resistivity |
topic |
internal erosion geophysics dams electrical resistivity |
description |
Abstract Dams are structures that dam rivers and streams for a variety of purposes. These structures often need to be sturdy to withstand the force of the impoundment and the high values of accumulated water load. The constant maintenance of these structures is essential, since a possible accident can lead to damage of catastrophic proportions. This research presents an alternative cheap and quick application for investigating water seepage in earth dams, through the application of the DC resistivity geophysical method from the electrical resistivity tomography (ERT) technique in Wenner array. Three ERT lines were placed parallel to the longitudinal axis of a dam formed by clay soil from the decomposition of diabase. The data are presented in 2D and pseudo-3D geophysical images with electrical resistivity values modeled. Based on the physical principle of electrolytic conduction, that is, decrease in electrical resistance in materials or siliceous minerals in moisture conditions as compared to the material in the dry state, the results revealed low-resistivity zones restricted to some points, associated with water infiltration in the transverse direction of the dam. The absence of evidence as water upwelling on the front of the dam together with geophysical evidence indicate saturation restricted to some points and low probability at the present time, for installation of piping processes. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-03-01 2018-11-12T17:28:12Z 2018-11-12T17:28:12Z |
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/10.1590/0370-44672016700099 REM - International Engineering Journal. Fundação Gorceix, v. 70, n. 1, p. 47-52, 2017. 2448-167X http://hdl.handle.net/11449/158075 10.1590/0370-44672016700099 S2448-167X2017000100047 S2448-167X2017000100047.pdf 9086857312391080 0000-0002-6949-6679 |
url |
http://dx.doi.org/10.1590/0370-44672016700099 http://hdl.handle.net/11449/158075 |
identifier_str_mv |
REM - International Engineering Journal. Fundação Gorceix, v. 70, n. 1, p. 47-52, 2017. 2448-167X 10.1590/0370-44672016700099 S2448-167X2017000100047 S2448-167X2017000100047.pdf 9086857312391080 0000-0002-6949-6679 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
REM - International Engineering Journal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
47-52 application/pdf |
dc.publisher.none.fl_str_mv |
Fundação Gorceix |
publisher.none.fl_str_mv |
Fundação Gorceix |
dc.source.none.fl_str_mv |
SciELO 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_ |
1808128675957178369 |