SELF-MOVING BORING DEVICE AND METHOD OF REMOVING METHANE GAS FROM SUBTERRANEAN COAL LAYER

FIELD: hydraulic boring technology. SUBSTANCE: boring device has at least one guiding nozzle for cutting fluid, driving means for moving the device having at least one outwardly faced nozzle oriented against direction of device movement at an angle in range between 0 and 30 degrees relatively to giv...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MEJER TIMOTI GREGORI GAMIL'TON, STOKVELL MEHTT'JU, TRUMAN ROBERT
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS TESTING
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