BELT CHARGE OF SHEET HIGH EXPLOSIVE Russian patent published in 2015 - IPC F42B1/28 F42B3/93 

FIELD: blasting operations.

SUBSTANCE: invention relates to the method of explosion of array charges of sheet high explosives (HE) and can be used in the practice of dynamic barrier tests (materials and structures), as well as in a number of pulse technological operations (explosive pressing and welding). The charge comprises sections of the belts of the sheet HE glued on outer tube semicircles and located equidistant from the barrier. The belts of the sheet HE have a transverse gap eliminating the interaction of detonation waves in the charge belts. Almost simultaneous start of detonation of the charges is achieved by using a multipoint radial system of initiation from the ends of HE belts. The pressure pulses different in sizes on the surface are created by varying the thickness and width of the HE belts (pulse pressure variation) and the distance to the barrier (pulse duration variation). Profiling (distribution) of the load on the loading area is achieved by the placement of the belts and by changing the distance between them.

EFFECT: regeneration of smooth pressure profile on the cylindrical surface of the barrier and the expansion of the range of the creation of small and ultra-small pressure pulses.

3 dwg