| 摘要 |
PROBLEM TO BE SOLVED: To provide a segment for a tunnel, which can prevent an increase in a repairing portion of a segment body by preventing a temperature rise to the great depth of the segment body, when the temperature of the inside of the tunnel becomes high due to fire etc. SOLUTION: The segment for the tunnel is provided with a holding member 11 in which an inside space serving as a hole is formed. A ceramic lid member 20 is attached to the holding member 11. A space filler 23 is provided in the inside space of the holding member 11. The transfer of heat, which is associated with the convection of air in the inside space of the holding member 11, is suppressed with the space filler 23. COPYRIGHT: (C)2011,JPO&INPIT
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