Mining or in situ disintegration of hard material – Mine layouts
Patent
1997-02-11
1999-02-16
Bagnell, David J.
Mining or in situ disintegration of hard material
Mine layouts
299 30, 299 64, E21C 4118, E21C 3524, E21C 3520
Patent
active
058712607
ABSTRACT:
A continuous mining machine is provided for mining ultra thin coal seams, e.g. seams having a thickness of about 24 inches or less. A chassis supported by crawler tracks has a substantially horizontal axis powered cutter head mounted to its front and a conveyor extending from a gathering head toward the rear of the chassis. The conveyor includes a conveyor chain driven by at least one motor near the rear of the chassis for driving a sprocket. The gathering head includes a pair of counter-rotating discs with upstanding vanes and a deck having a maximum angle of about 10.degree. with respect to the dimension of elongation of the chassis. A small diameter idler sprocket for the conveyor chain is mounted beneath the deck, and a small diameter drive sprocket is provided for the cutting chain of the cutting head. The mining machine is controlled to keep it within a coal seam to be cut by using a first color video camera scanning the ceiling of the bore cut by the miner, and a second color video camera facing the floor. The mining machine may be used in a method of mining in which, after formation of a main bore of about 300-600 feet long, during withdrawal the machine forms a number of angled bores each roughly as long as the length of the machine.
REFERENCES:
patent: 3874735 (1975-04-01), Delli-Gatti, Jr.
patent: 3968995 (1976-07-01), Artenzen
patent: 4090601 (1978-05-01), Freed, Jr.
patent: 4133582 (1979-01-01), Kogelmann
patent: 4281876 (1981-08-01), Lansberry
patent: 4664448 (1987-05-01), Frenyo
patent: 5720527 (1998-02-01), Sartaine et al.
CM245-II Continuous Miner brochure, Lee-Norse, 1984.
CM285-II Continuous Miner brochure, Lee-Norse, 1984.
Toshiba CCD Color Camera IK-M41A instruction manual, cover sheet and pp. 1, 3, and 16, circa 1990.
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