Mining by insertion of cutting modules into shaft for connection

Details Mining by insertion of cutting modules into shaft for connection Mining by insertion of cutting modules into shaft for connection

1976-03-05

1977-12-06

Purser, Ernest R.

Mining or in situ disintegration of hard material

Processes

With material-handling

E21C 4100

Patent

active

040613992

ABSTRACT:
A shaft is formed from ground level downwardly to a subterranean seam of coal or other solids following preliminary survey procedures to locate the seam and establish its dimensions. A passage is cut radially into the coal seam and away from the shaft near the bottom thereof while coal cuttings are removed and delivered to ground level. The seam is then cut on an arcuate path centered on said shaft along the entire length of the radial passage while coal cuttings continue to be removed and delivered through the shaft to ground level. The mining apparatus is modular and comprises plural mining modules to be placed in the coal seam by a placement and advancing unit which is lowered in the shaft. A rotational driving unit is subsequently lowered in the shaft to drive coupled mining modules in unison through the coal seam on said arcuate path. In addition, self-propelled modules can drive themselves radially from the shaft outwardly into the seam and under remote control from ground level can propel themselves on a second path, e.g. an arcuate or, if desirable, a straight path, along one side of the radial cut.

REFERENCES:
patent: 1406351 (1922-02-01), Corrigan
patent: 3881775 (1975-05-01), McPherson
patent: 3892442 (1975-07-01), Janssen
patent: 3975053 (1976-08-01), Kochanowsky

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