FIELD: blasting operations.
SUBSTANCE: invention relates to production of explosives (E) and can be used for charge of shot holes, blast holes, regardless of their water cut, at open mining works and on special blasting operations, as well as during construction. Method of formation of explosive charge is in production of combined charge of two types of explosives, which are located concentrically to each other. For this purpose, a pipe is installed in the charged course, then the space around it is filled with explosive, the stem is made or not, after which the pipe is filled. At that the explosive, placed in the central part of the charge has detonation speed that exceeds detonation speed of the explosive, located in the peripheral part (outside of the pipe).
EFFECT: concentric charge design provides to increase efficiency of explosion, to reduce environmental load on environment, to simplify and improve safety of loading operations.
8 cl
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