FIELD: drilling and blasting operations, applicable in various branches using blasting operations in hard rock masses.
SUBSTANCE: the method consists in separation of the explosive charge into parts by an air gap of foam polystyrene. An holes without any wall inrushes the air gap is formed by dipping in the hole of the elements of foam polystyrene in the form of balls 0.55 to 0.64 of the hole diameter. In holes with wall inrushes-the elements of foam polystyrene in the form of ellipsoids with a lengthy axis smaller than the hole diameter a, thickening capacity of explosive is placed on the elements, the explosive is placed in a soft or elastic shell, whose diameter exceeds the hole diameter.
EFFECT: made easier the forming of the air gap of elements in the form of bodies of rotation of foam polystyrene.
2 dwg
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