FIELD: drilling and blasting operations in rock masses.
SUBSTANCE: proposed method of forming the divided charges in flooded wells includes forming the lower and upper parts of explosive charge in well at air gap dividing them. Then, elastic envelope with weighting material and chemical reagents evolving gas at interaction inside it is lowered into water above lower part of explosive charge. After elastic envelope has been filled with gas, upper part of explosive charge is formed above it. Mass of weighting material is so selected that negative buoyancy of elastic envelope partially filled with gas might be ensured. Amount of chemical reagents is so selected that elastic envelope filled with evolved gas might take preset height in explosive charge.
EFFECT: enhanced efficiency due to availability of gas gap in explosive charge formed in flooded well.
3 cl, 4 dwg
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