MINE CUTTER-LOADER OF SELECTIVE ACTION FOR ACCURATE PROFILE CUTTING OF ARC-SECTION DRIFT IN UNDERGROUND MINE WORKINGS AND CONSTRUCTION OF TUNNELS

摘要

PCT No. PCT/DE85/00412 Sec. 371 Date Jun. 23, 1986 Sec. 102(e) Date Jun. 23, 1986 PCT Filed Oct. 24, 1985 PCT Pub. No. WO86/02697 PCT Pub. Date May 9, 1986.Sectional cutting machine used to cut a curved gallery cross-section in underground mining and tunneling operations with cutting rollers arranged in a movable way in regard to the machine frame. The machine is characterized by the circumstance, that to cut the upper layer (10) and the gallery roof (11), an upper roller (2) configured as a frontal surface roller is used. The roller is moved on a support arm (4) along a rotation axis (6) which is parallel to the longitudinal axis of the machine. The lower layer is cut by a lower roller (3), configured as a lateral cutting roller with even front surfaces (9) of the roller bodies (8). This lower roller (3) is moved along a predetermined, even path, which is parallel to the gallery bed (17).