| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilator capable of ventilating the inside of a tunnel gallery extremely effectively. SOLUTION: A wet type dust collector 11 and an air supply duct 40 are loaded on a carrier truck 1. Dust floating in air in the tunnel gallery is collected by the wet type dust collector 11, and clean air discharged from an exhaust opening 32a for the dust collector 11 is sucked into the air supply duct 40, and exhausted towards a tunnel excavating section from an exhaust opening 40b for the duct 40.
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