Sequential detonation of explosive charges

Details Sequential detonation of explosive charges Sequential detonation of explosive charges

F - Mech Eng,Light,Heat,Weapons

42

D

F42D 1/055 (2006.01)

Patent

CA 2302166

A control system for controlling the initia-tion of detonation of a series of explosive charges (13) spaced apart from each other in boreholes (12) formed in a rock medium (10) to be blasted, said system being operative to apply controlled time difference in the time interval between suc-cessive detonations of at least one phase of the se-ries of charges, and which includes at least three successive detonations, so as to reduce the proba-bility of consecutive stimulation and amplification of ground vibration by reason of the detonation of the charges in the rock medium.

La présente invention concerne un système de commande permettant de commander l'amorçage de la détonation d'une série de charges explosives (13) placées à une certaine distance les unes des autres dans des trous de mine (12) formés dans un milieu rocheux (10) devant être miné. Ledit système permet d'appliquer une différence de temps contrôlée pendant l'intervalle de temps séparant les détonations successives d'au moins une phase d'une série de charges comprenant au moins trois détonations successives de façon à réduire la probabilité d'une stimulation et d'une amplification des vibrations du sol résultant de la détonation des charges dans le milieu rocheux.

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