NEW TYPE COUPLING PIECE FOR T-STEEL RETRACTABLE TUNNEL SUPPORTING FRAME

The utility model provides a novelcoupling piece for T-steel retractable tunnel supporting frame. The utility model is characterized in that the transverse cross-section of a slipping member (3) is in oblique I-shaped, a lap joint stands out a plurality of ear benches (7) with screw (8), the ear ben...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU WENRUO, HOU CHAOJIONG, MA NIANJIE
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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