METHOD FOR LOOSENING AND OUTBURST OF ROCKS BY BLASTING Russian patent published in 1995 - IPC

Abstract SU 1600465 A1

FIELD: construction. SUBSTANCE: method for loosening and outburst of rocks by blasting provides for driving of opening, charging it with ammonium nitrate and combustible additive, installation of intermediate live primer and initiating means, stemming the opening, wiring of blasting circuit and blasting. Combustible additive is used in form of fine fraction solid matter. Ammonium nitrate is placed in lower part of opening and covered with screening strip made of material chemically neutral to ammonium nitrate. Placed over strip over its entire area is layer of combustible additive. EFFECT: higher safety due to provision of blast completeness. 2 dwg

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SU 1 600 465 A1

Authors

Strausman R.Ja.

Ehtkin M.B.

Dates

1995-08-27—Published

1986-10-23—Filed