FIELD: building industry. SUBSTANCE: method involves stemming blast-holes in hard rock; the distance between holes (H) should not exceed 3.6 l, where l- is the length of discharge gap. After this, the rock is exposed to symmetric, cylindrical shock waves generated by electric discharges in liquid encountered in holes. Electric discharges are produced by explosive wires; the time lapse of the high-voltage pulse should not exceed 0.7 H/V, where V is velocity of longitudinal sound wave in the rock. EFFECT: higher efficiency and reliability. 4 cl, 2 dwg
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