TUNNEL SEGMENT

TUNNEL SEGMENT

PROBLEM TO BE SOLVED: To prevent an explosion of a filling concrete layer, when a fire is caused in a tunnel, without particularly arranging a fire resistant covering material. SOLUTION: This tunnel segment is constituted so that its filled filling concrete layer 5 side can be arranged toward the tu...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: AOKI TOSHIYUKI, MUKONO KATSUHIKO
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To prevent an explosion of a filling concrete layer, when a fire is caused in a tunnel, without particularly arranging a fire resistant covering material. SOLUTION: This tunnel segment is constituted so that its filled filling concrete layer 5 side can be arranged toward the tunnel inside by filling concrete 4 inside a box-shaped metallic casing 3. Among the filling concrete layer, the segment inner surface 9 side turned to the tunnel inside in at least an arranging state, is constituted of fire resistant concrete 4a blended with synthetic fiber to be melted at 300 °C or less. COPYRIGHT: (C)2007,JPO&INPIT