Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
Patent
1977-05-03
1978-03-07
Purser, Ernest R.
Mining or in situ disintegration of hard material
Processes
Stabilizing underground structure
299 13, 299 33, 61 84, E21D 908, E21D 1118
Patent
active
040776700
ABSTRACT:
A method for advancing and supporting an underground mine gallery in which a groove following the outline of the cross-section of the mine gallery is formed in the mine face and simultaneously thereto a plurality of bore holes are drilled in the part of the mine face located inwardly of the groove, in which a support frame is then placed into the groove and braced against the surrounding rock, whereafter explosives placed in the bore holes are exploded to remove the part inwardly of the groove from the mine face, while the loose material formed during the preceding steps is transported away from the mine face; and a machine for carrying out the method which is advanced after the above-mentioned steps are performed, whereafter the above-mentioned steps are repeated to thus advance the underground mine gallery while properly supporting the same during such advance.
REFERENCES:
patent: 3266845 (1966-08-01), Williamson et al.
patent: 3511538 (1970-05-01), Guenter
patent: 3675433 (1972-07-01), Silvestrov et al.
Blumental Gunter
Bohnes Karlheinz
Marr Peter
Spies Klaus
Bochumer Eisenhutte Heintzmann GmbH & Co
Purser Ernest R.
Striker Michael J.
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