Tunnel top supporting and reinforcing device

The utility model relates to the technical field of building construction, in particular to a tunnel top supporting and reinforcing device which comprises a supporting frame, three reinforcing frames are installed on the top of the supporting frame, fixing screw rods are connected to the three reinf...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DENG HONGLONG, XIE XIN, YU JIANGWU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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