Full-scale experimental study on smoke flow in natural ventilation road tunnel fires with shafts
Full-scale experimental study on smoke flow in natural ventilation road tunnel fires with shafts
- New search for: Tong, Yan
- New search for: Shi, Mingheng
- New search for: Gong, YanFeng
- New search for: He, JiaPeng
- New search for: Tong, Yan
- New search for: Shi, Mingheng
- New search for: Gong, YanFeng
- New search for: He, JiaPeng
Three full-scale burning tests were conducted in a natural ventilation city road tunnel with shafts. Fire sources were placed to be at different locations but its peak release heats were all around 5 MW. Results showed that large amounts of smoke and heat were released through shafts. The maximum smoke temperatures under the ceiling were below than 100 deg C, and being lower than 110 deg C at the safe height farther 3 m away from fires. The maximum smoke spreading horizontal lengths were less than 240 m both in the upwind and downwind. During the late stages, many smoke particles descended from the ceiling and downdraught occurred at shafts due to low smoke temperatures, but the visibility was not very bad and people needn't evacuate. All These results are valuable for fire protection and construction of natural ventilation road tunnel with shafts.
Document information
Full-scale experimental study on smoke flow in natural ventilation road tunnel fires with shafts
Vollmaßstäbliche Untersuchung eines Rauchstromes bei Bränden in Tunneln mit natürlicher Schacht-Lüftung
Tunnelling and Underground Space Technology ; 24 , 6 ; 627-633
2009
7 Seiten, 11 Quellen
Article (Journal)
English
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