STEEL SEGMENT AND METHOD OF JOINING STEEL SEGMENT

PROBLEM TO BE SOLVED: To provide a steel segment enabling a construction period to be shortened by easily positioning steel segments in a tunnel depth direction and tunnel circumferential direction though screws such as bolts and nuts are used as joining devices so that an excavation in the tunnel d...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	TANAKA MINATO, KAWAGOE MASARU
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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