WATER CUTOFF STRUCTURE OF ENTRANCE PART FOR USE IN ACEMOLE CONSTRUCTION METHOD

PROBLEM TO BE SOLVED: To provide a water cutoff structure of an entrance part for use in acemole construction method capable of preventing the spill of earth and sand and underground water which may emanate when a propulsion machine starts up or when it arrives at a goal. SOLUTION: The acemole const...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	NAKADOI TAMOTSU, YOSHIKAWA YUJI, TABATA NORIO, SAKAKIBARA NOBUYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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