Advances in the design of explosives detonators

Abstract

The common use of explosives to break rock for excavation leads to the constant detonators development, that over past two decades significantly increased their precision in order to improve effectiveness of the blasting works. The following article presents key achievements and milestones of detonators development as well as the directions of research aimed at improving their accuracy. The construction of detonators that are currently used for civilian purposes is shown. The requirement that should be followed during the development of time delay compositions are presented, as well as the current trends in the research of gasless compositions, the burn rate of which is independent of the pressure inside the detonator.