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Title: Applicability of geomechanical classifications for estimation of strength properties in Brazilian rock masses.
Authors: Santos, Tatiana Barreto dos
Lana, Milene Sabino
Santos, Allan Erlikhman Medeiros
Silveira, Larissa Regina Costa
Keywords: Geomechanical classifications
Rock slopes
Strength properties of rock masses
Stability analyses
Issue Date: 2017
Citation: SANTOS, T. B. dos et al. Applicability of geomechanical classifications for estimation of strength properties in Brazilian rock masses. Anais da Academia Brasileira de Ciências, v. 89, p. 859-872, 2017. Disponível em: <>. Acesso em: 25 ago. 2017.
Abstract: Many authors have been proposed several correlation equations between geomechanical classifications and strength parameters. However, these correlation equations have been based in rock masses with different characteristics when compared to Brazilian rock masses. This paper aims to study the applicability of the geomechanical classifications to obtain strength parameters of three Brazilian rock masses. Four classification systems have been used; the Rock Mass Rating (RMR), the Rock Mass Quality (Q), the Geological Strength Index (GSI) and the Rock Mass Index (RMi). A strong rock mass and two soft rock masses with different degrees of weathering located in the cities of Ouro Preto and Mariana, Brazil; were selected for the study. Correlation equations were used to estimate the strength properties of these rock masses. However, such correlations do not always provide compatible results with the rock mass behavior. For the calibration of the strength values obtained through the use of classification systems, stability analyses of failures in these rock masses have been done. After calibration of these parameters, the applicability of the various correlation equations found in the literature have been discussed. According to the results presented in this paper, some of these equations are not suitable for the studied rock masses.
ISSN: 1678-2690
metadata.dc.rights.license: Os trabalhos publicados no periódico Anais da Academia Brasileira de Ciências, exceto onde identificado, está sob uma licença Creative Commons que permite copiar, distribuir e transmitir o trabalho desde que sejam citados o autor e o licenciante. Fonte: Anais da Academia Brasileira de Ciências <>. Acesso em: 23 jan. 2020.
Appears in Collections:DEMIN - Artigos publicados em periódicos

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