| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000408940 |
| ISSN: | 0001-3765 |
| Authors: | Santos, Tatiana B1 Lana, Milene S1 Santos, Allan E.M1 Silveira, Larissa R.C1 |
| Institutions: | 1Universidade Federal de Ouro Preto, Departamento de Engenharia de Minas, Ouro Preto, Minas Gerais. Brasil |
| Year: | 2017 |
| Season: | Jun |
| Volumen: | 89 |
| Number: | 2 |
| Pages: | 859-872 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English 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 |
| Disciplines: | Geociencias |
| Keyword: | Geología, Macizos rocosos, Pendientes rocosas, Geomecánica, Análisis de estabilidad |
| Keyword: | Earth sciences, Geology, Rock mass, Rock slopes, Geomechanics, Stability analysis |
| Full text: | Texto completo (Ver HTML) |
