Host: The Japan Society of Mechanical Engineers
Name : Mechanical Engineering Congress,Japan
Date : September 11, 2016 - September 14, 2016
In current evacuation evaluation during tunnel fires, it is generally assumed that evacuation speed is 1.0 m/s and evacuees are unable to move (and become casualties) when concentration of smoke: Cs at ≧0.4(1/m) descends to their eye level (Height=1.5 meter, from the road surface). However, according to past studies and evacuation cases during real tunnel fires, it is shown that the relationship between emergency evacuation speed and smoke concentration values is not uniform. Therefore, the condition filled with smoke due to fires was simulated in a full-scale tunnel and experiments were carried out to verify the change of the walking speed of general participants with/without guidance footlights and questionnaire surveys were conducted. This paper describes those results in detail.
