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Journal of Mining Sciences

2014 year, number 5

Effect of Large-Scale Explosion on Spectrum of Seismic Waves in a Stone Quarry

V. N. OPARIN1, V. F. YUSHKIN1, N. N. POROKHOVSKY2, A. N. GRISHIN3, N. A. KULINICH1, D. E. RUBLEV1, A. V. YUSHKIN1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
2Iskitim Quarry, Novosibirsk Open Pit Mine Management JSC, Komsomolskii pr. 22, Novosibirsk, 630004 Russia
3Siberian State Transport University, ul. D. Kovalchuk 191, Novosibirsk, 630049 Russia
Keywords: open pit mine, hierarchical block structure of rocks, limestone, large-scale blast, seismic wave, spectrum analysis, grain-size composition

Abstract

The article deals with the interaction between the groups of explosive charges installed at the free surface of rock exposure along the open pit mine perimeter. The spectrum analysis of the explosion-induced seismic waves shows that peak density frequency of the seismic waves are governed by the formation of the canonical low-frequency components as a result of successive actuation of explosive charges, and are conditioned by hierarchical block structure of blasted rock masses.