Water stream and laser beam fracturing apparatus

Details Water stream and laser beam fracturing apparatus Water stream and laser beam fracturing apparatus

B - Operations, Transporting

23

K

B23K 26/00 (2006.01) B23K 26/12 (2006.01) B23K 26/14 (2006.01) B23K 26/40 (2006.01) B28D 1/22 (2006.01) E21C 25/60 (2006.01) E21C 37/18 (2006.01)

Patent

CA 2153985

The present invention is a novel apparatus (15) for excavating a mass (19) such as a rock (21). The present invention directs a high velocity fluid stream (14) onto a mass and simultaneously directs a pulsing laser beam (17) onto the same mass. The laser beam (referred to as the "fracturing laser beam") vaporizes material and the fluid confines the vaporized material causing shock waves to enter the rock. The confined shock waves impart greater force than non-confined shock waves and this greater force fractures the mass. The fluid stream also washes loose particles from the mass to provide a new excavation surface.

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