METHOD FOR DRIVING UNDERGROUND WORKING CLOSE TO OUTBURST-RISKY ROCK MASS Russian patent published in 1997 - IPC

Abstract RU 2094613 C1

FIELD: mining industry. SUBSTANCE: according to method, drilled in work face are blast-holes of cutting, auxiliary, and contouring type. Blast-holes are filled with explosive charges which are fired successively. Fired first in work face are contouring blast-holes in zone of realizing gas-dynamic occurrences of dangerous outbursts in rock mass. Created is screening contouring zone of fissuring from side of rock mass. Fired simultaneously with contouring blast-holes are cutting blast-holes. EFFECT: high efficiency. 1 dwg

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RU 2 094 613 C1

Authors

Shpunt Vladimir Isaevich[Ua]

Burtsev Viktor Alekseevich[Ua]

Dates

1997-10-27Published

1992-09-21Filed