ABSTRACT
The quality of broken rock and productivity depend mainly on the extent of controlling the blast effects. The kinetics of rock breakage was studied by the author by the method of recording cracks, including those induced by blasting, with synchronous high-speed photography using the time loop LV-04 equipped with an electro-optical transducer of the type UMI-92 or UMI-93. The methodology of modelling suggested here helps in obtaining comparable results of rock breakage by blasting in a model as well as in real conditions. Equivalent material for modelling rock breakage by blasting should be selected after taking into account the similarity of strength and elastic properties of the rocks being modelled, as determined by the correlations. Hence an equivalent material of another composition was chosen as filler, which is characterised by a high acoustic absorption coefficient, in order to preserve the similarity of elastic properties.
