METHOD OF INITIATION OF EXPLOSIVE CHARGES Russian patent published in 2005 - IPC

FIELD: blasting operations.

SUBSTANCE: the purpose of the invention is creation of an effective and trusty firing method with a controlled time delay. The substance of the invention consists that at initiation of a surface network a time delay of initiation of explosive charges between the adjoining wells define from the following ratio T<L/V, where T is a time delay, L is a line of the least resistance from the nearest blasted well to the initiated well, V - a breaking wave velocity (it defines a physical-mechanical state of the blasted medium), and initiation of the wells blasting charges is conducted by a system of a non-electric blasting with a null delay, at that for obtaining a converging detonation of the explosive charge the length of waveguides of the system of the non-electric blasting is regulated. For upgrading accuracy of initiation of a surface network it is possible to use electrical detonators with electronic delay (EDED).

EFFECT: the invention ensures an effective and trusty firing method with a controlled time delay.

2 cl, 1 dwg, 1 ex