Título: | MONITORING TAILINGS DAMS USING GEOPHYSICAL METHODS OF ELECTRICAL RESISTIVITY AND MICROSSEISMIC IN THE STATE OF GOIÁS | ||||||||||||
Autor: |
ALINE ROZA DE FARIA |
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Colaborador(es): |
TACIO MAURO PEREIRA DE CAMPOS - Orientador MARCO ANTONIO DA SILVA BRAGA - Coorientador |
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Catalogação: | 28/OUT/2024 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=68497&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=68497&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.68497 | ||||||||||||
Resumo: | |||||||||||||
The monitoring of tailings dams, crucial to prevent accidents, is based on
visual inspections and geotechnical instrumentation. Due to recent incidents,
enhancement has become crucial, leading to the inclusion of geophysics in this
study. Therefore, aiming to improve conventional monitoring during and after the
alteration of two dams located in Catalão, Goiás, a campaign was conducted to
obtain six electrical resistivity profiles to assess subsurface saturation conditions.
Additionally, a microseismic monitoring system was implemented, involving
fifteen seismic stations. By analyzing anomalies identified during the campaign in
May 2022 and geological sections, it was possible to identify areas with
unexpectedly high moisture content in places where such occurrences were not
expected. Conventional microseismic monitoring revealed that most detonations
did not significantly cause the mass to vibrate worryingly, with alerts primarily
triggered by human activity and machinery movement. However, in the case of
passive microseismic monitoring, due to the short monitoring period, no significant
variations in the velocity percentage were recorded to enable a conclusive analysis
of the mass s behavior.
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