A Study on the Model Experiment for Smoke Flow in Road Tunnel Fire

In this study, smoke movement in tunnel fire with natural and longitudinal ventilation systems has been investigated. Reduced-scale experiments were carried out under the Froude scaling using 14.55kW fire source with a wick and experimental data is obtained with 1/18 model tunnel test. Temperature profiles were measured under the ceiling and vertical direction along the center of the tunnel and poisonous gas was measured at emergency exit point. The results show that refuge time for 225m intervals of emergency exit in case of natural ventilation systems is 256 seconds and critical velocity for sufficient back-layer prevention is 2.8m/s for fire strength of 20MW.

keywords: Tunnel fire, smoke flow, model experiment, froude scaling, 터널화재, 연기유동, 축소모형실험, Froude 축적

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Article Contents

Vol.6 No.2

A Study on the Model Experiment for Smoke Flow in Road Tunnel Fire

Abstract

Reference

(사)한국터널지하공간학회