| 摘要 |
PROBLEM TO BE SOLVED: To perform ventilation inside a tunnel in the case of a fire properly by using ventilation equipment while reducing the installation cost of the ventilation equipment.SOLUTION: Ventilation equipment 20 for performing ventilation inside a tunnel 10 in the case of a fire inside the tunnel 10 includes: hoods 21 which are installed at both pit mouths 11 of the tunnel 10, respectively, and each of which is larger than the pit mouth 11 at least above the pit mouth 11; ventilation mechanisms 22 each of which is installed in an upper part of each hood 21 and sucks and exhausts an atmosphere inside the tunnel 10; and opening/closing mechanisms 23 which are installed at both pit mouths 11 of the tunnel 10, respectively, and can open and close the pit mouths 11 respectively. |
