CPC E21C 25/16 (2013.01) [E21C 25/06 (2013.01); E21C 27/16 (2013.01); E21C 31/02 (2013.01); E21C 35/00 (2013.01); E21C 35/23 (2013.01); E21C 35/24 (2013.01); E21C 41/16 (2013.01); E21D 9/102 (2013.01)] | 5 Claims |
1. A method for removing material from a rock wall, the method comprising:
moving a cutting edge through the rock wall to create a first slot in the rock wall;
moving the cutting edge through the rock wall to create a second slot in the rock wall, the second slot being separated from the first slot by an uncut portion, the uncut portion defining a base surface attached to the wall;
cutting a notch into the base surface of the uncut portion; and
applying a force on the uncut portion to break the uncut portion away from the wall,
wherein applying a force on the uncut portion includes contacting the uncut portion with a vibrating mass in order to induce the uncut portion to break away from the rock wall, and
wherein the vibrating mass is a cutter head supporting the cutting edge.
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