Modelo para anÃlise de tensÃes gravitacionais a partir de caracterÃsticas geomecÃnicas dos maciÃos rochosos

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Stresses acting on rock mass can be either of natural origin or induced. The natural origin stresses, or in situ stresses, are divided into: gravitational, tectonics, waste and land. The induced stresses are caused by the action of engineering works such as excavation or construction. These works alter the balance of the state of pre-existing stresses in the rock mass, which implies in installing a support system that ensures stability and security of the structure. This paper discusses the development of a mathematical model for ideal elastic bodies that aims to provide stresses in rock masses purely elastic. So, in order to achieve this, the theory of elasticity was chosen and, for simplicity, it was considered only the effects of gravitational stress. Furthermore, the combination of physical and geomechanics parameters were made with the drilling samples and the analysis of the state plan of stresses at various points along the drilling. In the development of the proposed model was used, as a tool for programming, the CENTURA, also known as SQLWINDOWS, which is a programming tool used in the development of client / server environment to Microsoft Windows and other platforms GUI (Graphical User Interface). By doing the validating tests of the program, it were considered three hypothetical cases: first, the worked area presents a unique material; second, the worked area presents four materials arranged in horizontal layers, and the third, the worked area presents five materials prepared random way

ASSUNTO(S)

tensÃes gravitacionais gravitational tensions relationship between drilling â in situ stresses relacionamento sondagem - tensÃes in situ mineralogia elastic model modelo elÃstico

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