Citation

Ren F, Shi C, Li J, Che H, Xu X. China Saf. Sci. J. 2021; 31(3): 156-161.

Copyright

(Copyright © 2021, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2021.03.022

PMID

unavailable

Abstract

In order to verify smoke exhaust effect of natural smoke exhaust mode in semi-underground tram station fire, taking a typical tram station in a city as research object, a full scale model was established by numerical simulation method for calculation, evolution characteristics of temperature distribution in station space, velocity of smoke exhaust outlet and escalator exit in semi-underground tram station under train fire were studied,airflow field, smoke movement process and control effect of natural smoke exhaust mode in semi-underground station fire were analyzed. The results show that for semi-underground tram station, natural smoke exhaust mode can prevent smoke from falling to dangerous height within specified time (6 min), which can be used in the design of same tram station,under natural smoke exhaust mode, air distribution is mainly controlled by thermal buoyancy of fire smoke, which can not maintain stable air distribution and make-up air flow rate at the escalator entrance, which has certain limitations. © 2021 China Safety Science Journal

Language: zh