| 摘要 |
This invention relates to a blast initiation assembly (10) including a length of shock tube (20), and lengths of safety cord (18) (22) which provide a time delay for propagating an explosives reaction. The assembly (10) includes one length of shock tube (20) with a first length of safety cord (18) connected to one end thereof, and a second length of safety cord (22) connected to the other end thereof. A detonator (12) for detonating an explosives composition is attached to the end of the first length of safety cord (18), and a detonator (28) with a clip (32) attached thereto is attached to the second length of safety cord (22). The first and second lengths of safety cord are selected to provide a required time delay. The clip (32) is arranged is for clipping to a length of shock tube on a similar blast initiation assembly, to join assemblies for sequential rock blasting. |
