Method and device for breaking hard compact material such as...

Details Method and device for breaking hard compact material such as... Method and device for breaking hard compact material such as...

E - Fixed Constructions

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C

262/68

E21C 37/06 (2006.01) B26F 3/00 (2006.01) E21C 37/12 (2006.01)

Patent

CA 1090379

TITLE METHOD AND DEVICE FOR BREAKING HARD COMPACT MATERIAL SUCH AS ROCK ABSTRACT OF THE DISCLOSURE 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.

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