HOSE FOR CHARGING FLOODED WELLS WITH LOW-DENSITY EXPLOSIVE COMPOSITION Russian patent published in 2024 - IPC F42D1/08 F42B3/87 

FIELD: mining; blasting operations.

SUBSTANCE: invention relates to mining and blasting operations. Hose for charging of water-flooded wells with low-density explosive composition is made in the form of a shell sealed at one end of a tubular form of a waterproof flexible material having the property of non-retention of shape. Load with specific density exceeding specific density of ground water filling the well is connected to the sealed end of the shell. Other end of the shell is used to introduce an explosive compound feed hose into its cavity. Sealed end of the shell is made of a material having a stretching property. Cavity in the zone of this end is filled with a heavy liquid with specific density higher than that of ground water. In the central part at the section at a distance from the sealed end of the shell and at the section at a distance from the other end of the shell, the diameter of the shell filled with the explosive mixture coincides with the diameter of the well. In the remaining sections and in the zone of the sealed end, the diameter of the shell filled with the explosive composition is less than the diameter of the shell section in the central part. Transition of sections of smaller diameter to section of larger diameter is made in the form of inclined surfaces of the shell with an angle of inclination of 30–34°.

EFFECT: creation of a hose with the possibility of guaranteed laying to the well bottom even in conditions of water availability in it and engagement with the well wall to exclude the hose surfacing when it is filled with low-density explosive.

3 cl, 3 dwg