METHOD OF CHARGING OF FLOODED DOWNCAST WELLS WITH WATER-CONTAINING EXPLOSIVES Russian patent published in 1997 - IPC

FIELD: mining industry and construction, conducting of sparing, blasting operations in flooded rocks. SUBSTANCE: after the water-proof flexible hose is placed in the well it is fixed in the bottom-hole formation zone of the well to its walls around the edges to a height of 1 to 5 well diameters by pushing-apart forces acting from the hose interior; a mixture of components with a chemically active gas-generating addition introduced in the process of charging is used as water-containing explosive; when fed to the hose this mixture has a density exceeding the well water density, and the density of finished water-containing explosive after completion of chemical reaction of gas-generating addition at least with one of the components of the water-containing explosive is lower than the well water density. EFFECT: facilitated procedure. 2 cl