EXPLOSIVE CHARGE Russian patent published in 2017 - IPC F42B3/08 

FIELD: blasting.

SUBSTANCE: explosive charge comprises electric detonator, additional detonator and disposed along the length of explosive charge having an axial channel configured to explosive decomposition of said explosive in the detonation regime of overcompressed electric detonator and additional detonator. The axial channel of the blasting charge in its cross-section has a rotationally symmetrical elliptical shape, and the axial height of the channel in the charge is 1.1-2.0 times greater than its width. Electric detonator is adapted to initiate an additional point detonator. Charge elliptical axial channel is provided with one or more partitions of a powerful explosive precluding detonation speed reduction misalignment elongate charge, the configuration of which is analogous to the axial channel. Blasting charge ratio of maximum height to the distance from the partition to the additional detonator or to the distance between the partitions is equal to 0.5-2.0. In the axial channel of the explosive charge at the opposite end of the additional detonator explosive charge insertion of the explosive is positioned, which provides the possibility of connection to other explosive charges.

EFFECT: invention enables to smoothly adjust the speed of the detonation wave, increase efficiency and degree of fragmentation of explosive surrounding environment.

2 dwg, 1 tbl