Advanced stand device of driving face

This is a temporary driving face supporting device for laneway. There are at least two hinged girders at the top of the device, which are hinged integrated to each other. A hydraulic pile is installed in the middle of the device, with the top fixed to the hinged girder, the bottom fixed to the drivi...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	LIWEN,OUYANG GUO
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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