METHOD TO CHARGE WEAKLY WATER-CUT DOWNHOLES Russian patent published in 2013 - IPC F42D1/08 

FIELD: mining.

SUBSTANCE: method includes preliminary drying of a wall, lowering of a hydraulic insulating sleeve into it with a closed lower end, fixation of an upper end of the sleeve, charging of a non-waterproof explosive into the sleeve. The part of the hydraulic insulation sleeve with the closed lower end is used, the length of which is by 30-40 cm exceeds the height of the water column in the well before drying. The upper end of this part of the sleeve is pre-reinforced and fixed inside the well with the help of a rope, one end of which is attached to the upper reinforced end of the hydraulic insulation sleeve part, and the other one is fixed on the day surface.

EFFECT: reduced consumption of a hydraulic insulation sleeve, its weight, simplified stemming.

1 dwg