Self-stemming cartridge

Details Self-stemming cartridge Self-stemming cartridge

F - Mech Eng,Light,Heat,Weapons

42

B

F42B 3/087 (2006.01) F42D 1/20 (2006.01) F42D 1/22 (2006.01)

Patent

CA 2666645

A cylindrical casing (18) has first and second ends (33 and 31), the first end (33) being closed. The casing (18) encloses an accelerant (22) disposed adjacent the first end (33), at least one stemming mechanism (21), and a fuse (14 or 14 ) extending from the accelerant (22) out of the second end (31) of the cylindrical casing (18). The cartridge (12) is made of a rupturable cylindrical casing (18) with accelerant (22) and self-stemming mechanism (22) inserted therein. A method of breaking hard (R) materials involves detonating a self-stemming cartridge (12) disposed in a borehole (B).

L'invention concerne un boîtier cylindrique (18) qui comporte des première et seconde extrémités (33 et 31), la première extrémité (33) étant fermée. Le boîtier (18) comprend un accélérant (22) disposé à côté de la première extrémité (33), au moins un mécanisme de bourrage (21) et un fusible (14 ou 14) en extension à partir de l'accélérant (22) hors de la seconde extrémité (31) du boîtier cylindrique (18). La cartouche (12) est constituée d'un boîtier cylindrique cassable (18), l'accélérant (22) et le mécanisme d'auto-bourrage (21) étant insérés à l'intérieur. Un procédé de rupture de matériaux durs (R) implique la détonation d'une cartouche d'auto-bourrage (12) disposée dans un forage (B).

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