| 摘要 |
<p>Apparatus for breaking rock which includes a cartridge (16) with a base (18) and a wall (20) which extends from the base, the base and the wall forming an enclosure, a propellant (24) inside the enclosure and means (26) for igniting the propellant, and wherein at least the wall is made from a malleable material adapted to reinforce the wall (40) of a hole (10) in the rock(12) in which the cartridge is located.</p> |
