FIELD: mining industry. SUBSTANCE: a generator of elastic vibrations is placed into vertical drill-holes. Mining is intensified by exciting elastic pulsating pressure waves in drill-hole whose power spectra have rock dilution frequencies. Besides, pulsating pressure waves are excited simultaneously in two drill-holes spaced at a distance defined by a mathematical expression. EFFECT: higher efficiency. 2 cl, 2 dwg
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Authors
Dates
1994-06-15—Published
1991-05-21—Filed