Rock Mass Classification
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Indicator kriging applied to RMR geomechanical modelling in a Pb-Zn deposit case study
Abstract The opening of a mining enterprise requires knowledge of the geomechanical characteristics of the mineral deposit, which will be worked according to the use of parameters of stability and/or resistance of the material, as well as the discontinuities present in the rock. In this study, the Rock Mass Rating methodology was used to propose a geomechani
REM, Int. Eng. J.. Publicado em: 2021-06
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2. Estimating the rock mass deformation modulus: A comparative study of empirical methods based on 48 rock mass scenarios
Abstract The rock mass deformation modulus, Erm, is an input parameter for most numerical modeling to verify the deformation behavior of rocks due to rock engineering activities within/on it. Among the most common methodologies used for estimating this parameter, empirical correlations based on rock mass classification schemes (e.g., RQD, RMR, GSI, and Q) st
REM, Int. Eng. J.. Publicado em: 2021-01
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3. Applicability of geomechanical classifications for estimation of strength properties in Brazilian rock masses
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 obta
An. Acad. Bras. Ciênc.. Publicado em: 2017-06
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4. Characterization and geomechanical compartmentation of the heterogeneous basalt rocky mass applied the engineering / Caracterização e compartimentação geológica e geomecânica de maciço basáltico heterogêneo, aplicados a engenharia
Nesta dissertação, são apresentados os processos de caracterização, classificação e de compartimentação geomecânica dos maciços rochosos, com a utilização dos dados pertinentes às fases de estudos nos projetos de engenharia. Como área de pesquisa analisou-se os dados referentes aos estudos da fundação da barragem, de uma Usina Hidroelétrica
Publicado em: 2010
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5. Rock mass characterization of Morro Grande PCH using the RMR system / Compartimentação de maciços rochosos para projetos básicos de PCH´s usando o sistema RMR: aplicação no projeto básico da PCH Morro Grande - RS
The opening of the electric production sector in Brazil causes an increase amount of Small Hydroelectric Power Station - PCHs - project. The necessaries geological-geotechnical studies for this kind of construction had to be adapted to this new sector necessity, without quality losses. This research aim was the improvement of the geological-geotechnical stud
Publicado em: 2009
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6. Classificação do maciço rochoso e caracterização das brechas da mina subterrânea de Vazante-MG / Rock mass classification and the breccias of the underground mine of Vazante-MG characterization
Esta dissertação descreve o maciço rochoso da mina subterrânea de Vazante e algumas importantes características geomecânicas das brechas, ou bimrocks, que ocorrem em subsolo na área da mina. Realizaram-se mapeamentos geológico-geotécnicos sistemáticos dos principais níveis da mina, que permitiram a individualização de quatro famílias de descont
Publicado em: 2009
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7. IMPERMEABILIZAÇÃO DAS SUPERFÍCIES DE CONTATO PARA IMPLANTAÇÃO DE ESTRUTURAS DE CONCRETO EM MACIÇO DE ROCHA SULFETADA - O CASO DA UHE IRAPÉ -
The water that percolates through acid sulfate rock masses can become chemically aggressive to concrete, thereby compromising some of its characteristics, such as watertightness and strength. The presence of acid sulfates in the rock mass at the installation site of the Irapé Hydroelectric Power Plant led to the study and implementation of protective measur
Publicado em: 2008
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8. Analise de estabilidade do maciço rochoso da Mineração Casa de Pedra, Congonhas, Minas Gerais / Slope stability analysis of the Mineração Casa de Pedra, Congonhas, MG, Brasil rock mass
This work presents the study of the rock mass stability at the Mineração Casa de Pedra , Minas Gerais, using kinematic analisys and maps in 1:4000 scale. The geological structures, the friction angle and cohesion of the rock mass were evaluated through a geological geotecnical mapping technique. Data collected from each bench of the mine were relateded wit
Publicado em: 2007
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9. Estudo do comportamento do concreto no estado fresco contendo areia britada
The crushed sand possesses different characteristics from the natural one, mainly due to the high fine materials contents, particle size distribution, shape, roughness and lithological types. It is formed during the process of comminution of rock, and its able to suffer classification and improvement of the particles shape. Such characteristics affect, in la
Publicado em: 2007
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10. Caracterização de agregados de resíduos de construção e demolição reciclados e a influência de suas características no comportamento de concretos. / Characterisation of recycled aggregates from construction and demolition waste and the influence of their characteristics on concrete mechanical performance.
Construction and demolition waste (CDW) recycled aggregates are not largely used in concrete due to CDW composition heterogeneity and CDW recycled aggregate physical property variability from visual classification and hand sorting of proposed standards that provide insufficient relation between the aggregate characteristics and concrete performance. This the
Publicado em: 2005