# 도로터널 화재시 대배기구 환기방식에서의 배연 연구

• Jeon, Yong-Han (Department of Fire Fighting and Safety, Sangji yongseo college) ;
• Han, Sang-Cheol (Department of Fire Fighting and Safety, Sangji yongseo college) ;
• Yoo, Oh-Ji (Department of Building Mechanical Engineering, Shinheung College) ;
• Kim, Nam-Jin (Department of Nuclear & Energy Engineering, Cheju National University) ;
• Seo, Tae-Boem (Department of Mechanical Engineering, In-ha University) ;
• Kim, Jong-Yoon (Korea Fire Association)
• Published : 2009.06.25

#### Abstract

In this study it is intended to review the moving characteristics of smoke by performing visualization for the calculation of the optimal smoke exhaust air volume in case a fire occurs in tunnels where transverse ventilation is applied, and to obtain basic data necessary for the design of smoke exhaust systems by deriving optimal smoke exhaust operational conditions under various conditions. As a result of this study, when the critical velocity in the tunnel is 1.75 m/s and 2.5 m/s, the optimal smoke exhaust air volume has to be more than $173\;m^3/s$, $236\;m^3/s$ for the distance of the smoke moving which can limit the distance to 250m. In addition, in case of uniform exhaust the generated smoke is effectively taken away if the two exhaust holes near the fire region are opened at the same time.