SIMULATION OF DYNAMIC IMPACT ON THE ROCK MASS COMPLICATED WITH A CAVITY AND TECTONIC DISTURBANCE BY DISCRETE ELEMENT METHOD
G. N. Khan, E. P. Rusin
Chinakal Mining Institute, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Discrete element method, tectonic heterogeneity, softened layer, charge, shock wave
Abstract
The effect of a blast on a rock mass complicated with a cavity and tectonic heterogeneity is considered. The heterogeneity is an extended softened rock layer located in the vicinity of the cavity. It is shown that this layer reduces the effectiveness of dynamic effect on the cavity. The dependence of cavity stability during the blast on thickness of the softened layer and strength properties of the rock mass is revealed.
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