SHIELD EXCAVATOR

PURPOSE:To excavate a tunnel which is so formed as to have an almost flat lower portion by deciding most part of a tunnel opening using a first cutter face, and surely drilling a front working face with a second cutter face. CONSTITUTION:A first cutter face 10 is installed the outer form of which wh...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SARADA SUSUMU, IRIE HIRAKADO, INOSE JIRO, KURUMA FUMIO, SUKEGAWA TEI, IMAI KYOHEI, NAKAGOME HIROFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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