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US 5,810,098 AGranted
Method of breaking slabs and blocks of rock from rock formations and explosive shock transmitting and moderating composition for use therein
OwnerBoyd J. Watheninventor
Life of this patent
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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.
Claims5
A method of blasting rock into smaller rock pieces with reduced cracking of the rock, comprising the steps of:
- drilling a plurality of bore holes in the rock along a desired line of breakage, the bore holes having a diameter larger than the diameter of a selected detonating cord;
- placing a length of selected detonating cord in selected bore holes along with an explosive shock transmitting and moderating composition;
- and
- detonating the detonating cord whereby the explosive shock of the detonation is transferred to the rock through the explosive shock transmitting and moderating composition, but with reduced explosive shock, to thereby reduce cracking of the rock around the bore holes.
1 more element
Dependencies are inferred from the claim text.