HOSE FOR CHARGING FLOODED WELLS WITH LOW-DENSITY EXPLOSIVE COMPOSITION Russian patent published in 2024 - IPC F42D1/08 F42B3/87 E21C41/26 

FIELD: mining and blasting operations.

SUBSTANCE: hose for charging watered wells with low-density explosive composition is a shell sealed at one end of a tubular shape and made of a watertight flexible material which has no shape retention property, which is immersed into the well. A load with specific density exceeding specific density of ground water filling the well is connected to the sealed end of the shell. Load is made from a central part in the form of a truncated pyramid from heavy concrete, in which at least two opposite lying faces are made flat and inclined to the base of the pyramid at the same angle, and from shoes, each of which is made in the form of a cylinder of heavy concrete with a flat chamfer directed from the upper base to the lower one, the angle of inclination of which to the upper base is equal to the angle of inclination of the flat face of the central part. Each shoe is faced with chamfer to one flat face of central part with location of generatrix of concrete cylinder along well wall. Along the height of the truncated pyramid there is a through hole for passing the cord, one end of which is connected to the base of this pyramid, and the other is attached to the sealed end of the tubular shell. And in shoes there are transverse through holes for passage in each shoe of cord, one end of which is connected to this shoe, and the other is attached to the sealed end of the tubular shell with the lower part of the flat chamfer of each shoe on the upper part of the flat face of the truncated pyramid.

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 prevent the hose floating up when it is filled with low-density explosive.

2 cl, 15 dwg