Awning device for subway construction

The utility model discloses an awning device for subway construction. COMPRISING TWO FIRST RAIL, second guide rails are arranged at one ends of the two first guide rails; chutes are formed in the upper ends of the first guide rail and the second guide rail; connecting blocks are fixed to one end of...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HONG GUIFANG, KONG YUYU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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