Method of breaking slabs and blocks of rock from rock formations

Details Method of breaking slabs and blocks of rock from rock formations Method of breaking slabs and blocks of rock from rock formations

1997-01-10

1998-09-22

Nelson, Peter A.

Boring or penetrating the earth

Boring with explosion in inaccessible hole

Projectile forms bore

299 13, 102302, 102312, 102313, 1022758, E21B 700, E21C 4500, F42B 300

Patent

active

058100989

ABSTRACT:
Rock slabs or pieces are broken from larger rocks or from rock formations with reduced cracking of the broken rock slabs or pieces by drilling bore holes along the desired break lines, placing detonating cord into the bore holes, filling the bore holes with a shock transmitting and moderating composition, and detonating the detonation cord. The shock transmitting and moderating composition is preferably a gel with shock absorbing material such as microspheres suspended therein.

REFERENCES:
patent: 4080902 (1978-03-01), Goddard et al.
patent: 4198454 (1980-04-01), Norton
patent: 4548660 (1985-10-01), Ikeda et al.
patent: 4614146 (1986-09-01), Ross et al.
patent: 4790890 (1988-12-01), Miller
patent: 5584222 (1996-12-01), Engsbraten et al.
patent: 5597973 (1997-01-01), Gladden et al.

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