Título: | ANALYSIS OF THE LIQUEFACTION POTENTIAL OF A TAILING DAM | ||||||||||||||||||||||||||||||||||||||||||||
Autor: |
HERBERT MIGUEL ANGEL MATURANO RAFAEL |
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Colaborador(es): |
CELSO ROMANEL - Orientador |
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Catalogação: | 21/NOV/2012 | 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=20720&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=20720&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.20720 | ||||||||||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||||||||||
The disposal of tailings has been a very important concern in mining
companies around the world, with the main objective to protect the environment.
Large quantities of tailings are generated daily in the ore processing plants, being
necessary the availability of specific storage structures (tailings dam) which,
depending on the industrial production, must be successively raised in their
lifetime to provide higher storage capacity. Three methods of dam raising can be
used: the upstream method, the downstream method and the centerline method.
The upstream method, discussed in this thesis, begins with the construction of a
starting dyke. After this step, the tailings are deposited upstream, forming a beach
which will consolidate over time, gradually increasing the shear resistance of the
waste and serving as a foundation for future raising dikes. This procedure
continues until the final dam elevation is reached. This method is of simple
construction and low cost, but its main disadvantage is that the raising speeds can
be excessive and they may induce static liquefaction, a major cause of failure of
tailing dams around the world. This dissertation investigates the liquefaction
potential of a copper tailing dam, situated in Peru, making use of the empirical
method proposed by Olson, based on correlations with data from SPT field tests,
and the finite element method, considering the elastoplastic constitutive model
UBCSand.
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