FIELD: mining.
SUBSTANCE: furrows are cut on ice surface adjoining the pit lane that hinders slime processing to feed heat carrier to defrost and to make cutouts in layer body and cavities under ice body bottom surface. Floating hydraulic gun is used to jet lower layers above ice surface edged by cutouts. Then, ice is broken and thawed while exposed underlying soils are jetted by hydraulic gun and sucked by dredger as pulp to using equipment.
EFFECT: higher efficiency, lower costs at low ambient temperatures.
3 dwg
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