DEVICE TO CUT ROCK SLABS WITH HIGH-VOLTAGE DISCHARGES Russian patent published in 2013 - IPC E21C37/18 

FIELD: mining.

SUBSTANCE: device to cut rock slabs by high-voltage discharges has a tubular channel for supply of washing fluid into a gap between high-voltage and grounded electrodes made in the form of parallel plates separated with an insulator. The high-voltage and grounded electrodes are arranged horizontally, and on top to one of ends of the upper electrode there is a pipe fixed for rotation and displacement of the device, and in the gap between electrodes there is an above-bottomhole dielectric pipe, made with washing windows facing towards the near-bottomhole parts of electrodes. Inside the pipe of rotation and displacement there is a high-voltage pipe installed coaxially and separated with an intertubular insulator. The high-voltage and grounded electrodes are equipped with near-bottomhole electrode ribs of different shape.

EFFECT: device makes it possible to cut rock slabs from a narrow vertical slot to form a lengthy cut slot, besides, the cutting process may be continuous.

6 cl, 6 dwg