TUNNEL VENTILATION CONTROL DEVICE

PROBLEM TO BE SOLVED: To provide a tunnel ventilation control device, economically and effectively ventilable in a tunnel having a jet fan and a centralized exhaust facility. SOLUTION: This tunnel ventilation control device has the jet fan 22 as a ventilation facility, and the centralized exhaust facility having an exhaust port 24 for centralized exhaust. An anemometer 26, a smoke indicator 27 and a polluted gas densitometer 28 are arranged in the tunnel 21. The centralized exhaust facility 23 also has blade angle variable exhausters 25R(L) communicating the exhaust port 24 via an exhaust dust 31, and the exhaust duct 31 is provided with duct inside anemometers 26R(L) measuring a wind speed just before the exhausters. The operation air volume of the exhausters 25R(L) is determined based on a measured value of the anemometer 26, the smoke indicator 27 and the polluted gas densitometer 28 in the tunnel, and after its operation, a blade angle of the exhausters 25R(L) is changed until an exhaust air volume actual value determined from the duct inside anemometers 26R(L) and the known duct cross-sectional area, coincides with the exhauster operation air volume. COPYRIGHT: (C)2009,JPO&INPIT