Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
Patent
1982-07-26
1984-05-01
Purser, Ernest R.
Mining or in situ disintegration of hard material
Processes
Stabilizing underground structure
299 18, 299 19, E21C 4100
Patent
active
044457235
ABSTRACT:
A circular mining process for deep mining in which a substantially circular tunnel is cut in the mountain against the advancing continuous face of the mine. As coal is cut from the face and hauled outside, additional strata from below the coal, which includes rock and stone are piled and packed to the ceiling against the opposite wall to serve as a roof support. Vehicles with special implements move in one direction only and cut the advance wall, gather the mined ore, and haul the mined ore, as well as rock and stone to a clearing out of the mine on the side of the mountain, and adjacent to the portals of the circular passageway.
REFERENCES:
patent: 3975053 (1976-08-01), Kochanowsky
patent: 4232904 (1980-11-01), Hurd
patent: 4391470 (1983-07-01), Langenberg et al.
Miller Alfred E.
Purser Ernest R.
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