| 摘要 |
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 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 wall water density. Type permit emulsion explosive may be used as water-containing explosive, and sodium nitrite as gas-generating addition. EFFECT: facilitated procedure. |
