METHOD FOR INITIATION OF CHARGES Russian patent published in 2009 - IPC F42D1/00 

FIELD: blasting.

SUBSTANCE: method for initiation of explosive charges is related to the field of blasting works, in particular to systems and facilities of explosion. Method includes initiation of surface network with creation of surface slowdown and initiation of borehole charges 1 with application of non-electric explosion systems. Detonating caps 2 with delay mechanisms and segments of wave guides 4 that supply detonation to them are located on upper and lower levels of borehole charge 1. Segments of wave guides 4 are set with different length, and time of non-electric explosion system actuation is set as same, limited by time of detonation transfer by least segment of wave guide 4 and possible error of time variation of pyrotechnical delay mechanism of detonating cap 2 of non-electric explosion system. Besides time of detonation distribution in borehole charge should exceed sum of time variation of actuation of upper and lower detonating caps 2 of non-electric systems. Detonating cap 2 delay mechanism of non-electric explosion system is programmable electronic circuit of delay formation.

EFFECT: creation of efficient and reliable method of explosion with controlled delay time.

2 cl, 1 dwg