MINE ROCK DESTRUCTION CARTRIDGE Russian patent published in 2013 - IPC F42C3/00 F42D3/04 

FIELD: blasting operations.

SUBSTANCE: cartridge includes tubular housing (12), in which the following is made: the first section (16) with the first energy composition (18) located inside the first section, igniter (30) open to action of the first energy composition (18); inside tubular component (28) there located is the second section (70) with the second energy composition (80) located inside it; striker (44) having the possibility of being moved under action of explosive force to igniter (30); working element (48) and detonator (76) having the possibility of initiation of the second energy composition (80). Working element (48) has a surface area that yields to cross section area of striker (44) and has the possibility of being moved to the igniter at movement of the striker. The igniter has the possibility of being initiated with the working element only at capacity (94) filled with liquid, which is restricted at least partially with surfaces of the working element and the igniter.

EFFECT: effective, safe and reliable operation; invention allows forming the required energy pulse with the level that is sufficient for rock destruction only when it is in working medium.

9 cl, 5 dwg