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Abstract(s)
O presente trabalho tem por objectivo contribuir para aprofundar o conhecimento da temática que envolve a qualidade de execução da perfuração em maciços rochosos fracturados. A necessidade de conhecimento prévio sobre os resultados que podem ocorrer no desmonte de maciços rochosos após a realização da perfuração, leva a uma procura de indicadores que possibilitem obter mais conhecimento nessa matéria. No encadeamento do processo de análise de projecto, está o conhecimento adquirido, a caracterização do maciço rochoso, a implementação de correcções na componente da perfuração ajustadas ao maciço estudado e uma potencial previsão de granulometria final por emergência de um índice de qualidade, “Índice de Dispersão Volumétrica” que correlacione os elementos constituintes da geometria do diagrama de fogo e da envolvente intrínseca da matriz rochosa e aponte uma expectável granulometria final. Para atingir um nível de qualidade na operação global do processo de desmonte, a perfuração que está no topo da pirâmide assume papel de guia para as seguintes etapas, pelo que a qualidade dos equipamentos e acessórios e a sua correcta operação são fundamentais para obter o rigor da perfuração projectada, com vista a atingir uma determinada granulometria.
The present work aims to contribute to greater understanding of the topic that involves the quality of drilling execution in fractured rock masses. The need for prior knowledge of the results that may occur in rock masses blast after drilling, leads to a demand for indicators in order to obtain more knowledge on this subject. In chaining process analysis project is the knowledge acquired, the characterization of the rock mass, the implementation of the corrections in drilling studied and adjusted to the massive potential for predicting final particle size emergence of a Quality Score, "Index Volumetric scattering" that correlates the constituent elements of geometry diagram fire and surrounding rock matrix and the intrinsic point particle size expected at the end. To achieve a level of quality in the overall operation of the process of dismantling, drilling is at the top of the pyramid and assumes a leadership role for the following steps, so that the quality of equipment and accessories and their proper operation are essential to achieve the accuracy of drilling planned in order to achieve a certain particle size.
The present work aims to contribute to greater understanding of the topic that involves the quality of drilling execution in fractured rock masses. The need for prior knowledge of the results that may occur in rock masses blast after drilling, leads to a demand for indicators in order to obtain more knowledge on this subject. In chaining process analysis project is the knowledge acquired, the characterization of the rock mass, the implementation of the corrections in drilling studied and adjusted to the massive potential for predicting final particle size emergence of a Quality Score, "Index Volumetric scattering" that correlates the constituent elements of geometry diagram fire and surrounding rock matrix and the intrinsic point particle size expected at the end. To achieve a level of quality in the overall operation of the process of dismantling, drilling is at the top of the pyramid and assumes a leadership role for the following steps, so that the quality of equipment and accessories and their proper operation are essential to achieve the accuracy of drilling planned in order to achieve a certain particle size.
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Keywords
Maciços Rochosos Geomecânica Perfuração Desvios Optimização Rock masses Geomechanics Drilling Deviations Optimization