F - Mech Eng,Light,Heat,Weapons – 42 – D
Patent
F - Mech Eng,Light,Heat,Weapons
42
D
F42D 1/08 (2006.01) E21B 33/134 (2006.01)
Patent
CA 2270997
A stemming arrangement for a blast hole (1) having at least one explosive charge (3) therein is disclosed. The stemming arrangement comprises a hollow generally spherical member (4) arranged in use in the blast hole outwardly of the associated explosive charge (3). Detonation of the explosive charge (3) deforms the hollow member (4) so as to substantially block the bore of the blast hole (1) at the location of the hollow member (4) to substantially impede outward passage of material passed the hollow member (4). The hollow member (4) is made of sufficiently strong material to remain substantially functionally intact after detonation of the associated explosive charge (3).
La présente invention décrit un dispositif de bourrage pour un trou de mine (1) contenant au moins une charge explosive (3). Le dispositif de bourrage se compose d'un élément creux généralement de forme sphérique (4) disposé dans le trou de mine pour être utilisé à l'extérieur de la charge explosive associée (3). La détonation de la charge explosive (3) déforme l'élément creux (4) de manière à obstruer sensiblement le passage du trou de mine (1) au niveau de l'élément creux (4), afin d'entraver de façon sensible tout passage de matériau à travers ledit élément (4) vers l'extérieur. L'élément creux (4) est fabriqué dans un matériau suffisamment résistant pour que sa fonctionnalité demeure sensiblement intacte après la détonation de la charge explosive associée (3).
Long And Cameron
Shann Peter Christian
LandOfFree
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