Coal mine tunneling support device

The utility model discloses a coal mine tunneling support device. The device comprises a first inverted U-shaped frame, the front end and the rear end of the lower side of the first inverted-U-shapedframe are fixedly connected with the left ends of two transverse rods correspondingly. The right ends...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHAO QIONGXIANG, TANG YONGJING, SUN QIAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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