PECULIARTIES OF SEISMIC BLAST WAVE PROPAGATION ALONG THE COAL MINE SLOPE
V. F. Yushkin
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Четвертичные отложения, усиление волны взрыва, сейсмические измерения, Quarternary deposits, gain of blast wave, seismic measurements
Abstract
Triple gain of the maximum amplitudes or massif vibrations in a final phase of the consecutive blasting of groups of borehole charges during the propagation of a seismic blast wave outside the mined block in the Quarternary deposits of a coal mine slope has been experimentally established. The effect of “rocking” the massif occurs stepwise, and it is synchronized according to the selected delay intervals at detonation.
|
