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Advisor(s)
Abstract(s)
Uma das operações envolvidas no desmonte de maciços rochosos é a perfuração. A forma como esta é
executada é determinante para o sucesso do desmonte. Quando realizada correctamente o desmonte
produz uma boa fragmentação, reduzindo a sobrescavação. Assim, a correcta escolha das ferramentas
de perfuração assume um papel preponderante para os custos do desmonte em maciço rochosos. Esta
dissertação irá centrar-se nos parâmetros Geológicos, Geotécnicos e Geomecânicos e nos desvios de
perfuração. O objectivo geral deste trabalho é perceber a interdependência dos parâmetros geológicogeotécnicos
e geomecânicos do maciço rochoso com os desvios de perfuração, bem como estudar os
ângulos de intersecção entre os furos e as descontinuidades que originam o desvio. O estudo dos
parâmetros do maciço rochoso aliado a uma perfuração alinhada é salientado com o intuito de uma
abordagem de geoengenharia integrada dos maciços rochosos.
One of the operations involved in the rock masses blast is drilling. The way this is implemented is crucial to the success of the blasting. When performed correctly the stoping produces a good fragmentation, reducing the overbreaking. Thus, the correct choice of drilling tools plays a key role for the costs of stoping in massive rock. This dissertation will focus on Geological, Geotechnical and Geomechanical parameters, as well as drilling deviations. The general objective of this work is to realize the interdependence of geological and geotechnical parameters and geomechanical rock mass with drilling deviations, as well as studying the angles of intersection between the hole and the discontinuity that justify the deviation. The study of the parameters of rock mass combined with a drilling line is emphasized in order to approach geo-engineering integrated into the rock mass.
One of the operations involved in the rock masses blast is drilling. The way this is implemented is crucial to the success of the blasting. When performed correctly the stoping produces a good fragmentation, reducing the overbreaking. Thus, the correct choice of drilling tools plays a key role for the costs of stoping in massive rock. This dissertation will focus on Geological, Geotechnical and Geomechanical parameters, as well as drilling deviations. The general objective of this work is to realize the interdependence of geological and geotechnical parameters and geomechanical rock mass with drilling deviations, as well as studying the angles of intersection between the hole and the discontinuity that justify the deviation. The study of the parameters of rock mass combined with a drilling line is emphasized in order to approach geo-engineering integrated into the rock mass.
Description
Keywords
Geomecânica Maciço rochoso Desvios de perfuração Geomechanics Rock masses Drilling deviations
Citation
Publisher
Instituto Politécnico do Porto. Instituto Superior de Engenharia do Porto