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http://dx.doi.org/10.9711/KTAJ.2010.12.1.043

A study on an interval of tunnel cross passage considering inclination and internal airflow  

Rie, Dong-Ho (인천대학교 안전공학과)
Kim, Ha-Young (인천대학교 안전공학과 대학원)
Yoo, Ji-Oh (신흥대학 건축설비설계과)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.12, no.1, 2010 , pp. 43-49 More about this Journal
Abstract
The escape connecting gallery in a tunnel on a road is one of emergency equipment to ensure safety for passer in the tunnel against the tunnel fire. Government stipulate over 500m tunnel has the cross passage at intervals of less then 250 m. However, this lump estimated interval is generated the concerns of exaggeration and under construction because peculiarity of the tunnel ex. The velocity of the tunnel airflow, an incline, degree of a fire, and innering area are not considered. The study indicate the way to estimate of the cross passage considered an incline and the velocity of the tunnel airflow for efficient application of cross passage on the tunnel design. As a result, in 0.0 m/s and 1.0 m/s of the velocity of the tunnel airflow case, the movement of smoke is influenced by the incline however, in 20 m/s case, it isn't influenced by incline much. According to the velocity of tunnel airflow and the incline, optimum interval of cross passage is not corresponded. Therefore established lump estimate that has 250 m intervals would be changed to estimate of optimum interval of cross passage that considered about the properties of tunnel, the velocity of the tunnel airflow, incline, degree of a fire and innering area of the tunnel.
Keywords
Tunnel fire; escape connecting gallery; tunnel airflow;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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