A Evaluation Study of Local Smoke Control Facility for the Smoke Spread Prevention on Tunnel Fire

Abstract

The modern tunnel tends to be long and deep and therefore has a lot of difficulties for effective smoke ventilation on fire due to the semi-hermetic structure. Also, it has difficulty on evacuation and fire fighting by toxic gases together with high increase rate of temperature. The smoke occurring on fire is to avoid spreading over adjacent area and secure a escape road for prolonging the escape time. Accordingly, test on performance evaluation has been carried out applying air curtain, local smoke extraction facilities, in this study. As a result of the test, it can be seen that the smoke barrier formed by the air curtain has an effect on prevention of the smoke layer spreading. In addition, in the result of the measurement on the carbon monoxide inside and outside the barrier by the air curtain, there was difference of 40-time carbon monoxide inside and outside. Therefore, it has been shown that the effect to prevent the smoke from spreading is expected on fire of the tunnel applying the air curtain.

Air Curtain Nozzle Design for Uniform Jet Expulsion

“…화재와 관련하여 연기확산 방지를 위한 에어커튼 시스템 과 관련한 연구도 진행되었다 (7,8) . Kim과 Lee (2) 는 급기노즐 과 배기후드를 포함하는 에어커튼 시스템을 제안하여 제 트기류에 대한 측정 및 수치해석을 통해 분석한 바 있다.…”