COLLAPSIBLE DEVICE FOR HOLE DRILLING AT LEVEL DEVELOPMENT

FIELD: mining. ^ SUBSTANCE: collapsible device contains support system, which includes tubular expansion shell bolts and drilling system, consisting of a spout guide, a jackleg with mechanical gauge and detachable drilling chuck, joining in operating position into a full design by fixing the spout g...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SABJANIN GEORGIJ VASIL'EVICH, TRUBETSKOJ KLIMENT NIKOLAEVICH, GALCHENKO JURIJ PAVLOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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