- 권한신청
- P-ISSN2233-8292
- E-ISSN2287-4747
- KCI
ISSN : 2233-8292
도로터널 화재발생시 연기유동에 관한 축소모형실험 연구
A Study on the Model Experiment for Smoke Flow in Road Tunnel Fire
신현준 (한국건설기술연구원)
강세구 (연세대학교)
안경철 (㈜태조엔지니어링)
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초록
도로터널내 화재가 발생한 경우 자연환기와 종류식 환기시스템에서의 연기유동에 대한 연구가 수행되었다. Froude Scaling에 기초한 1/18 축적의 축소모형실험장치가 제작되었으며, 화원으로는 연료심지를 이용한 14.55kW 규모의 연소기가 사용되었다. 화원으로부터 등비간격으로 터널천정부근과 수직방향의 온도분포가 측정되었으며, 연소가스의 농도가 피난대피구 입구에서 측정되었다. 연구결과로서 자연환기시스템에서 비상대피구가 225m 간격으로 설치되어 있을 경우 비상대피구 구간의 연기확산시간은 256초가 되며, 20MW의 화재강도에 대해 화염역류를 완전히 방지하기 위해서는 터널풍속을 2.8m/s로 형성해 주어야 한다.
- keywords
- Tunnel fire, smoke flow, model experiment, froude scaling, 터널화재, 연기유동, 축소모형실험, Froude 축적
Abstract
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
참고문헌
(2003.) Development of Fire Strength Control with Scaling model tunnel in road tunnel, Inha university
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(2002.) Analysis of Smoke Control for Longitudinal Ventilation Using Jet Fan, Journal of Konyang University Industrial Cooperation,
(2002.) A Study of Smoke Movement in Tunnel Fire with Natural Ventilation, Transactions of KSME B,,
(2003.) An Experimental Study of Smoke Movement in Tunnel Fires with Aspect Ratio of Tunnel Cross Section,
(2000.) The Study on the Burned Gas Movement respect to Tunnel Grade during Fire Disaster, Proceedings of the ASHRAE 2000 Winter Meeting,
(1998.) On Smoke Control for Tunnels by Longitudinal Ventilation,
(1996) Critical Ve locity,
(1968.) The Movement of Smoke in Hor- izontal Passage Against an Air Flow,
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