Method of breaking a hard compact material, means for carrying o

Details Method of breaking a hard compact material, means for carrying o Method of breaking a hard compact material, means for carrying o

1975-04-17

1976-10-26

Purser, Ernest R.

Mining or in situ disintegration of hard material

Processes

Breaking down by direct contact with fluid

E21C 3700

Patent

active

039880370

ABSTRACT:
A hard compact material, such as rock, is broken by delivering a hydraulic fluid, such as water, into at least one hole which has been pre-drilled in the material to be broken, the hole functioning as an hydraulic fluid cylinder. A piston is driven into the hole to impact the fluid to generate a high pressure in the fluid and to cause tensile stress cracks in the material by the established pressure. Due to the concentration of the stress at the bottom of the hole, the cracks are initiated and spread generally radially outwardly substantially normal to the principal stress direction. A plurality of said holes may be drilled and the cracks linked together by appropriate choice of form, depth, orientation, spacing and number of the holes. Preferably, the piston is driven into the hole by means of a gun at speeds ranging up to several hundred meters per second.

REFERENCES:
patent: 99595 (1870-02-01), Robb
patent: 479500 (1892-07-01), Githens

Affiliated with

Also associated with

Rating

Method of breaking a hard compact material, means for carrying o 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 of breaking a hard compact material, means for carrying o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of breaking a hard compact material, means for carrying o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-181492