ROCK DESTRUCTION DEVICE Russian patent published in 2014 - IPC F42D1/22 F42D3/04 

FIELD: mining.

SUBSTANCE: rock destruction device (32) comprises a sealed elongated flexible tube (40), a cartridge (74) with energetic material located inside the tube (40), a valve device (50, 54, 56, 64, 66, 68) for providing filling the tube with the liquid and expanding, and the means (86) for detonating the energetic material during immersion of the cartridge in the liquid. The tube (40) has an inner channel (42) and the opposite sealed first end (44) and the second end (48). The cartridge (74) is mounted inside the channel (42), and the valve device (50, 54, 56, 64, 66, 68) comprises an inlet connection (64, 66, 68) for introducing the liquid into the channel to create a pressure in the channel and the expansion of the tube in at least the radial direction, and an outlet connection (50, 54, 56) for the exit of air from the channel (42). The inlet connection (64, 66, 68) comprises a valve (68) of filling of the single action providing the liquid passageway into the channel and eliminating its output from the channel. The outlet connection (50, 54, 56) comprises an air bleed valve.

EFFECT: safety and efficiency of the method of secondary rock breaking.

8 cl, 6 dwg