NDLI: Study on Ventilation and Smoke Control System of Subway Transfer Stations

Content Provider	IEEE Xplore Digital Library
Author	Yan-Feng Li Yi-Xin Zhang Xin-Xin Lin Feng Xiao Jun-Mei Li
Copyright Year	2014
Description	Author affiliation: Beijing Univ. of Technol., Beijing, China (Yan-Feng Li; Yi-Xin Zhang; Xin-Xin Lin; Feng Xiao; Jun-Mei Li)
Abstract	As a representative form of public transportation, subway system is undertaken to satisfy constantly increasing transport needs and developed commonly in many big cities. Among several catastrophes in subway stations, including fire, flood, earthquake, explosion, toxic gas leakage etc., fire is the most threatening hazard to passengers. Subway fires had caused huge casualties and property losses during the past decades. With the development of metro line network, more and more transfer stations appeared. Compared with the general subway station, smoke control system of transfer station has its particularity and complexity. A typical cross-shaped metro transfer station is used as an example for the study. Effect of two different schemes of ventilation and smoke control in extreme conditions in which multiple fires happen simultaneously on both platforms in the transfer station are studied by using numerical simulation method. In fire scenario No.1, air is supplied in underground one while independent smoke control is taken in underground two and three. In scenario No.2, based on scenario No.1, tunnel fans are used to assist in smoke control by opening screen door. Fire source is designed for t2 rapid fire with peak 2MW. The results show that, smoke spread in second underground floor can be controlled effectively by both schemes, the measure used in scenario 2 effectively raises the wind speed downward the stairs while lower temperature around stairs, so that stairs round fire source can be used as emergency evacuation passages for a longer time, guaranteeing a better smoke control performance in interchange station. Connecting the underground third floor with tunnel ventilation system by opening PSD can increase the downward air flow velocity and decrease the air temperature at staircases near the fire. Period during which the staircase near fire can be used for evacuation is increased. Reliable smoke control performance for transfer station can be got.
Sponsorship	Shenzhen Res. Inst., Central South Univ.
Starting Page	746
Ending Page	749
File Size	403298
Page Count	4
File Format	PDF
e-ISBN	9781479966363
DOI	10.1109/ICICTA.2014.181
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature measurement subway transfer station Wind speed Fires Ventilation Numerical simulation fire Numerical models smoke control Floors numerical simulation
Content Type	Text
Resource Type	Article

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