Method of fracturing rock or similar material and apparatus ther

Details Method of fracturing rock or similar material and apparatus ther Method of fracturing rock or similar material and apparatus ther

1990-10-17

1992-02-11

Bagnell, David J.

Mining or in situ disintegration of hard material

Processes

Forming blocks

125 40, 299 20, E21C 3706

Patent

active

050871005

ABSTRACT:
A method of fracturing a hard compact material such as rock or concrete, having a hole pre-drilled in the material area to be fractured which includes inserting a outer slug of solid material into the hole to a bottom thereof, and impacting the outer slug with a force sufficiently large to cause at least a top portion of the slug to transfer the impact to the sides of said hole so as to fracture the surrounding material.

REFERENCES:
patent: 99595 (1870-02-01), Robb
patent: 1631290 (1927-06-01), Sheedy et al.
patent: 3101706 (1963-08-01), Pyle et al.
patent: 3507540 (1970-04-01), Silverman
patent: 3988347 (1976-10-01), Denisart et al.

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