FIELD: mining.
SUBSTANCE: combined charge shaping method involves formation of charge in water-flooded part of the well from water-resistant explosive, arrangement on mirror of water displaced upwards in the well of the mixture consisting of the material having floating properties, capable of withstanding the weight of charge from non-water-resistant explosive, on which non-water-resistant explosive is lowered. At that, material having floating properties and binding agent are pre-mixed; the obtained mixture is poured on surface of water displaced upwards with water-resistant explosive; after mixture is moistened due to contact with water, it is left in the well for the period required for mixture to cure on water surface, and after the obtained mixture is cured, non-water-resistant explosive is arranged on it.
EFFECT: enlarging the capabilities of the material having floating properties, and reducing the manufacturing cost of blasting operations.
1 dwg
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