ELECTRIC PULSE METHOD OF ROCK SLABS CUTTING Russian patent published in 2012 - IPC E21C37/18 

FIELD: electricity.

SUBSTANCE: electric pulse method of slabs cutting is performed by delivery of high-voltage pulses to double-electrode device with high-voltage and grounded electrodes moved along submerged slab. Before high-voltage pulses delivery to high-voltage electrode, grounded electrode is put under lower surface of elevated slab and high-voltage electrode is installed on side surface of the slab at chosen distance from grounded electrode. Then upon delivery of high-voltage pulses to high-voltage electrode as far as slab is being destroyed above grounded electrode, electrode assembly is elevated to slab height and is lowered to initial position, and operations are repeated till required cut is obtained.

EFFECT: simplifying procedure of slabs cutting and improving work efficiency.

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