EXTENDED CHARGE FOR DESTRUCTION OF ROCKS BY BLAST Russian patent published in 1997 - IPC

Abstract RU 2072091 C1

FIELD: driving of rock workings or breaking of rock mass by means of a pin-point blast. SUBSTANCE: cylindrical shell 1 is filled with explosive 2. Cover 3 with a shaped recess is hermetically installed on one end of shell 1. Boss 4 having the shape of the end shaped recess is made on the other end. Shell 1 has longitudinal shaped recess 5. Belts 6 in the form of brush 7 are positioned on the shell external surface. EFFECT: enhanced efficiency. 7 cl, 4 dwg

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RU 2 072 091 C1

Authors

Lipovoj A.I.

Lipovaja T.B.

Dates

1997-01-20—Published

1994-03-30—Filed