Method for controlled fragmentation of hard rock and...

F - Mech Eng,Light,Heat,Weapons – 42 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

F42D 3/04 (2006.01) E21B 7/02 (2006.01) E21B 15/04 (2006.01) E21C 25/02 (2006.01) E21C 37/00 (2006.01) E21C 37/12 (2006.01) E21C 37/14 (2006.01) E21C 37/16 (2006.01)

Patent

CA 2235676

Rock and other hard materials, such as concrete, are broken by a combination of a mechanical impact breaker (33, 47) and a small-charge blasting process. A mechanical impact breaker (33, 47) fragments rock by delivering a series of mechanical blows to the rock. The fracturing process is accomplished by pressurizing the bottom of a drill hole (9) in such a way as to initiate and propagate a controlled fracture (18, 30) or propagate any pre-existing fractures near the hole-bottom (12). In practice, a small-charge blasting method is used to fracture and partially break out the center portion of the excavation. A mechanical impact breaker (33, 47) can then be used efficiently to further break and dislodge the rock that has been weakened by the small- charge blasting.

L'invention porte sur la fragmentation de roche et d'autres matériaux durs par l'utilisation combinée d'un concasseur à percussion mécanique (33, 37) et d'un procédé de dynamitage à faible charge. Un concasseur à percussion mécanique (33, 47) fragmente la roche en produisant une série de percussions mécaniques sur celle-ci. Le procédé de fragmentation s'effectue par pressurisation du fond d'un trou de forage (9) de façon qu'une fracture maîtrisée (18, 30) soit amorçée et propagée ou que des fractures préexistantes se propagent près du fond du trou (12). En pratique, un procédé de dynamitage à faible charge est utilisé pour fracturer et partiellement casser la partie centrale de l'excavation. Un concasseur à percussion mécanique (33, 47) peut alors être utilisé efficacement pour continuer à casser et à détacher la roche préalablement affaiblie par le dynamitage à faible charge.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for controlled fragmentation of hard rock and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for controlled fragmentation of hard rock and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for controlled fragmentation of hard rock and... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1380606

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.