WIDTH ENLARGING SEGMENT, PRESSING DEVICE AND CONSTRUCTION METHOD FOR TUNNEL

WIDTH ENLARGING SEGMENT, PRESSING DEVICE AND CONSTRUCTION METHOD FOR TUNNEL

PROBLEM TO BE SOLVED: To provide a segment, a pressing device and a construction method for a tunnel, preventing misalignment of a tunnel under construction. SOLUTION: A width enlarging tunnel hole 5 is excavated along a main tunnel hole 7 excavated by a shield machine 1, and in order to construct a...

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Bibliographische Detailangaben
Hauptverfasser: ADACHI HIDEAKI, NAKANE TAKASHI, YOSHIDA YUZURU, KANEKO KENICHI, HIROTOMI SATOSHI, OZAKI MASAYA
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a segment, a pressing device and a construction method for a tunnel, preventing misalignment of a tunnel under construction. SOLUTION: A width enlarging tunnel hole 5 is excavated along a main tunnel hole 7 excavated by a shield machine 1, and in order to construct a width enlarging tunnel 11 in the enlarged width tunnel hole 5, a width enlarging segment 15 is stretched in the enlarged width tunnel hole 5 to construct the width enlarged tunnel 11. A width enlarging segment body 57 is provided with an anchor member 47 for holding the segment body 57 by natural ground of the tunnel hole 5. COPYRIGHT: (C)2009,JPO&INPIT