Coal seam drill-miner

A coal seam drill-miner is characterized by comprising a drill pipe, a collector, and a coal-water separating mechanism. The drill pipe penetrates in a hole protecting pipe and the collector. The hole protecting pipe and the front end of the collector are connected in a sealing mode. A gas pumping o...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CHEN WEI, LIU LIANGFU, HAO LILEI, XU KUI, GAO QING
Format:	Patent
Sprache:	eng
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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