Abstract
Abstract This contribution presents an introduction into that part of the field of elastic wave propagation which is relevant to blasting of single and multiple boreholes and addresses briefly borehole breakdown and the formation of the fracture network around a borehole which ultimately leads to the disintegration of the rock mass. Phenomena of this kind are encountered in mining and quarrying. Analytical as well as numerical work referring to stress wave expansion from a detonating borehole will be addressed in detail. Much of the research reported here has been performed at the Fracture and Photo-Mechanics Laboratory (FPML) at the Vienna University of Technology. In order to gain an improved understanding of the mechanisms controlling borehole breakdown and ensuing rock fragmentation, a multidisciplinary approach is followed which includes analytical work and numerical modeling. The main emphasis is put on the effect of the velocity of detonation on the stress wave propagation and interaction with the ...
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