| 摘要 |
- 48 A breaking agent for use in boreholes and other rock or concrete breaking operations; said breaking agent operable 5 with commercial detonator initiation systems; said breaking agent 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; 10 characterised in that initiation of said low 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. '302 Fig. 5/ |
