Fluid jet method and device for breaking hard material

Details Fluid jet method and device for breaking hard material Fluid jet method and device for breaking hard material

1976-08-27

1978-12-12

Purser, Ernest R.

Mining or in situ disintegration of hard material

Processes

Breaking down by direct contact with fluid

175 67, 299 95, E21C 3712

Patent

active

041293355

ABSTRACT:
A hard compact material, such as rock, is broken by directing a high velocity jet of fluid, such as water, into a drill hole in the material to be broken. The jet is generated by a nozzle and is directed into the drill hole through a tubular member, which is associated with the nozzle. Upon having traversed the tubular member, the jet is suddenly arrested in the hole to break the material by the established jet stagnation pressure stemmed by the tubular member.

REFERENCES:
patent: 3231031 (1966-01-01), Cleary
patent: 3572839 (1971-03-01), Okabe
patent: 3988037 (1976-10-01), Denisart et al.

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