Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
Patent
1975-04-28
1977-04-12
Purser, Ernest R.
Mining or in situ disintegration of hard material
Processes
Stabilizing underground structure
299 16, 166308, E21C 2710, E21C 3712
Patent
active
040171213
ABSTRACT:
In dry mining of trona by usual methods such as the room-and-pillar and the long wall mining methods, dust formation, energy requirements, and mining machine wear are reduced and mining tool life is increased by prefracturing the trona in situ prior to mining by (a) driving holes into the trona bed to be mined; (b) introducing fracturing agent into the holes, and (c) causing the fracturing agent to fracture the trona in situ without substantial displacement of the trona so that the prefractured trona will continue to support the overburden.
REFERENCES:
patent: 3384416 (1968-05-01), Ruehl et al.
patent: 3402968 (1968-09-01), Fischer
patent: 3650564 (1972-03-01), Williamson
patent: 3778108 (1973-12-01), Pennington et al.
Allied Chemical Corporation
Fuchs Gerhard H,.
Purser Ernest R.
Rooney Gerard P.
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