Inner supporting device of heavy caliber non-reinforcing-rib thin-wall steel pipe

The utility model discloses an inner supporting device of a heavy caliber non-reinforcing-rib thin-wall steel pipe. The structure of the inner supporting device of the heavy caliber non-reinforcing-rib thin-wall steel pipe is mainly formed by at least two pieces of arc U-steel, U-steel end plates, b...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHOU XIMIN, WANG YONGPING, HU CHENGJUN, AN HUI, HAN SHUNBAO, LIU XUANJIN, SUN ZHICHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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