CHANGING OF EXISTING CULVERT AND EXCAVATOR USED THEREFOR

PURPOSE:To realize a muddy water pressure type shield method by pressurizing muddy water in a facing closed section, excavating along bends of an existing culvert while securing the stability of a bedrock and, at the same time, discharging scraps together with muddy water. CONSTITUTION:A cylindrical...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HAINO HITOSHI, OKAMOTO KAZUYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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