SHIELD EXCAVATOR

PURPOSE:To eliminate necessity of soil improvement work by forming an opening for excavation of a branch route in a shield plate of a tunnel excavator which has a branch shield excavator which has a built-in direction-changeover and by blocking the opening with concrete materials. CONSTITUTION:After...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SARADA SUSUMU, SONODA TETSUJI, MATSUMOTO YOSHIJI, MATSUMURA KEIJI
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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