DEVICE FOR DESTRUCTION OF OVERSIZED ROCKS Russian patent published in 2002 - IPC

FIELD: practice of blasthole drilling destruction of rocks. SUBSTANCE: the device has an explosive in an envelope made in the form of a shaped charge, and a fuze, is provided with an elongated U-shaped body with air bosoms arranged in the vertical walls, piston installed inside the chamber and made with a recess and of two parts separated by a damping spacer and spring-loaded relative to the upper flange of the body, in which holes are made accommodating the valves, guide for the explosive fastened in the lower part of the chamber for movement in its longitudinal axis, the explosive is made in the form of an elongated shaped charge and provided with a damping spacer separating it from the piston and bolt and metal foil located in the recess of the elongated shaped charge, and the fuze installed on the opposite end of the body relative to the guide is made of initiating explosive in the form of a cartridge. EFFECT: enhanced ecological effect due to reduced dispersion of rock pieces at destruction of an oversized rock. 3 cl, 2 dwg