Underground mining system

Details Underground mining system Underground mining system

1975-07-14

1976-11-02

Purser, Ernest R.

Boring or penetrating the earth

With above-ground means for handling drilling fluid or cutting

With suction pump inlet communicating with bore bottom

175 67, 175422, 299 17, 299 64, E21C 4500

Patent

active

RE0290211

ABSTRACT:
Hydraulic underground mining system adapted to operate through a small diameter well bore and into a subterranean body and including a mining capsule carried on the lower end of an elongate support structure. The mining capsule includes a liquid jet nozzle at its upper end for forming a laterally directed jet stream to impact material in the ore body and to pulp the same into a slurry. An orifice having a grate for preventing entry of excessively large material is positioned below the jet so that freshly pulped slurry flows into the orifice, the latter being connected to an elongate positive displacement pump mounted below the orifice. Suitable hydraulic power means are provided for operating the pump and for progressively moving the jet stream [ ] through at least a portion of an arc. Fixed liquid jets are also provided at the pump inlet for flushing and priming and to the lowermost portion of the capsule and to facilitate movement of the apparatus in the well bore.

REFERENCES:
patent: 2678203 (1954-05-01), Huff
patent: 3393013 (1968-07-01), Hammer et al.
patent: 3799614 (1974-03-01), Miscovich et al.

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