TUNNEL AND SEGMENT THEREFOR

PURPOSE:To enable the joining work, etc., of a new segment to the existing segment safely. CONSTITUTION:A new segment 1 is joined to the existing segment through positioning members 8 to construct subsequently the wall of a tunnel. At that time, while fitting the positioning member to a recess 8 for...

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Bibliographische Detailangaben
Hauptverfasser:	YAHARA NORIOMI, MORI TERUYUKI, HATAGOSHI AKIRA
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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Beschreibung
Zusammenfassung:	PURPOSE:To enable the joining work, etc., of a new segment to the existing segment safely. CONSTITUTION:A new segment 1 is joined to the existing segment through positioning members 8 to construct subsequently the wall of a tunnel. At that time, while fitting the positioning member to a recess 8 formed in a joining section of one segment, the positioning member is fitted to a recess 8 formed in a joining section of the other segment. A new segment is positioned, and bolt holes provided in the segments (bolt holes of joint metal fittings 4) are conformed to each other.