METHOD FOR DRIVING UNDERGROUND WORKING

METHOD FOR DRIVING UNDERGROUND WORKING

FIELD: mining industry. SUBSTANCE: this can be used for driving underground workings of smooth contours. According to method, driven is blind working by blasting bore-hole charges of explosive with subsequent widening of working by blasting fan-located blast-hole charges located over its perimeter a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KONANYKHIN V.A, FILIPPOV P.A, KONANYKHIN A.I, MAKARENKO M.B, VASIL'KOV V.K
Format: Patent
Sprache:eng
Schlagworte:
AMMUNITION
BLASTING
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
HEATING
LARGE UNDERGROUND CHAMBERS
LIGHTING
MECHANICAL ENGINEERING
MINING
SHAFTS
TUNNELS
WEAPONS
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Beschreibung
Zusammenfassung:FIELD: mining industry. SUBSTANCE: this can be used for driving underground workings of smooth contours. According to method, driven is blind working by blasting bore-hole charges of explosive with subsequent widening of working by blasting fan-located blast-hole charges located over its perimeter at angle to blind working equal to angle of internal friction of rock mass. EFFECT: high efficiency. 5 dwg