TUNNELING MACHINE TO DRIVE DEVELOPMENT WORKINGS IN ROCK WITH ITS PRELIMINARY WEAKENING Russian patent published in 2001 - IPC

FIELD: mining industry. SUBSTANCE: tunneling machine includes arrow-shaped actuating tool, two manipulators with radiators of SHF energy mounted for movement in horizontal and vertical planes on both sides of longitudinal axis of machine, track-laying mechanism, loader of rock mass, re-loader, electric and hydraulic drives, control system. Tunneling machine is fitted with two manipulators with nozzles feeding nitrogen gasified from liquid state to weaken rocks of front face by heating and cooling. Each manipulator is mounted between arrow-shaped actuating tool and manipulator with radiator of SHF energy for movement in horizontal and vertical planes independently and simultaneously with it. EFFECT: preliminary weakening of rocks. 5 dwg