ROCK CRUSHING METHOD Russian patent published in 1997 - IPC

FIELD: rock crushing and drilling equipment. SUBSTANCE: this method relates to crushing and drilling rock and artificial materials by electric pulse discharges. Electric pulses are brought to electrodes installed on rock, and electric discharges are realized under layer of liquid. Period of increasing voltage of electric pulses up to breakdown is selected from following condition: t_br≅ 2•10^-6•S^0,3,s,, where t_br - period of increasing voltage of electric pulses up to breakdown, s; S - distance between electrodes, m. EFFECT: high efficiency. 2 tbl, 2 dwg