Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/jspui/handle/123456789/12268
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dc.contributor.authorChaves, Leonardo Soares-
dc.contributor.authorCarvalho, Luiz Alberto de-
dc.contributor.authorSouza, Felipe Ribeiro-
dc.contributor.authorNader, Alizeibek Saleimen-
dc.contributor.authorArroyo Ortiz, Carlos Enrique-
dc.contributor.authorTorres, Vidal Félix Navarro-
dc.contributor.authorCâmara, Taís Renata-
dc.contributor.authorNapa Garcia, Gian Franco-
dc.contributor.authorValadão, George Eduardo Sales-
dc.date.accessioned2020-05-27T14:35:45Z-
dc.date.available2020-05-27T14:35:45Z-
dc.date.issued2020-
dc.identifier.citationCHAVES, L. S. et al. Analysis of the impacts of slope angle variation on slope stability and NPV via two different final pit definition techniques. REM - International Engineering Journal, Ouro Preto, v. 73, n. 1, p. 1-8, jan./mar. 2020. Disponível em: <http://www.scielo.br/scielo.php?script=sci_abstract&pid=S2448-167X2020000100119&lng=en&nrm=iso>. Acesso em: 10 mar. 2020.pt_BR
dc.identifier.issn1807-0353-
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/12268-
dc.description.abstractThe traditionally and widely used Lerchs-Grossmann algorithm presents well-known limitations that newer propositions attempt to overcome. The direct block schedule (DBS) methodology, which has gained relevance with computational advances, obtains the final pit as a natural result of production sequencing, different from Lerchs-Grossmann-based algorithms. This process flow applies constraints in the final pit definition stage attempting to provide a more realistic result and to minimize risks. Slope instability is a common and inherent risk to open pit mining and may affect the project's net present value (NPV). A study of the impacts of slope angle variations on safety indexes and final pit NPV provides an auxiliary tool for the overall slope angle definition process. This article presents a case study in which the effects of variations of the overall slope angle on the safety factor (SF) and project NPV were analyzed. A total of 25 pits were generated by each studied final pit definition methodology, and each pit had the sections with the varied slope angles analyzed in the stability assessment, resulting in a total of 150 slopes analyzed. A comparison between the results obtained by the two different methodologies implemented in commercial software is presented. The results show no relationship between the NPV and the overall slope angle using the DBS methodology. An analysis of the results for each geotechnical sector obtained by the traditional methodology was conducted and may contribute to the trade-off analysis between the best slope angle to achieve a reasonable SF and the maximum NPV.pt_BR
dc.language.isoen_USpt_BR
dc.rightsabertopt_BR
dc.subjectOptimizationpt_BR
dc.subjectOverall slope anglept_BR
dc.subjectDirect block schedulept_BR
dc.subjectNet present valuept_BR
dc.titleAnalysis of the impacts of slope angle variation on slope stability and NPV via two different final pit definition techniques.pt_BR
dc.typeArtigo publicado em periodicopt_BR
dc.rights.licenseA REM - International Engineering Journal - autoriza o depósito de cópia de artigos dos professores e alunos da UFOP no Repositório Institucional da UFOP. Licença concedida mediante preenchimento de formulário online em 12 set. 2013.pt_BR
dc.identifier.doihttp://dx.doi.org/10.1590/0370-44672019730011pt_BR
Appears in Collections:DEMIN - Artigos publicados em periódicos

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