| 摘要 |
- 38 A breaking agent for use in boreholes and other rock or concrete breaking operations; said breaking agent operable with commercial detonating systems; said breaking agent 5 comprising a cartridged or poured volume of an explosive formulation, so formulated as to maintain a low velocity detonation in conditions of borehole confinement; velocity of said detonation being between 1200 and 2000 metres per second; characterised in that initiation of said low 10 velocity detonation of one, or an interconnected series, or a poured column of said breaking agent, may be initiated by any one of, an electric detonator, a shock tube detonator or an electronic detonator. p13 Signal tube or lead-wires r g t -. B h . Br h. e - -. ........... . .. .. .. . .. ... .... ......i |
