터널 화재시 역기류의 위치 결정에 관한 실험적 연구
An Experimental Study on the Determination of Backlayering Distance in Tunnel Fires
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초록
본 연구에서는 터널에서 화재 발생시 역기류의 위치를 결정하기 위하여 축소실험을 실시하였다. Froude 상사를 사용하여 1/20로 축소된 모형터널에서 실험을 실시하였으며 가연물질로는 에탄올를 사용하였다. 한 변의 길이가 8∼16 cm의 화원을 사용하였으며 발열량은 2.47∼12.30 kW이다. 터널 단면의 종횡비(터널높이/터널폭)가 증가할수록 역기류를 제어하기 위해 더 큰 배연 풍속이 요구됨을 확인하였다. LB* 5일 때 역기류를 막기 위한 배연속도가 0.25승에서부터 발열량에 비례하여 증가한다. LB* 5에서는 발열량의 0.3승에 비례한다.
Abstract
In this study reduced-scale experiments were conducted to determine the backlayering distance in tunnel fires. The 1/20 scale experiments were carried out under the Froude scaling using ethanol square pool fire ranging from 8 to 16cm in each side with total heat release rate from 2.47 to 12.30 kW. It has been found that ventilation velocity increases with aspect ratio(tunnel height/tunnel width). At LB* 5 the ventilation velocity increases proportional to the backlayering distance from 0.25 power of the heat release rate. However at LB* 5 the ventilation velocity varies as the 0.3 power of the heat release rate.
참고문헌 (13)
- "NFPA 502: Standard for Road TunnelsBridges and Other Limited Access Highways", pp.~502 (2001)
- Ingason, H, "Effects of Ventilation on Smoke Spread in Tunnels Proceedings of the 1st International Conference on Tunnel Fires and One Day Seminar on Escape from Tunnels", pp.407~416 (1999), Lyon
- Ribot,B, "Numerical Simulations of Smoke Extraction by Roof Vents in a Tunnel Comparison with Experimental Tests Analysis of Physical Phenomena Proceedings of the 1st International Conference on Tunnel Fires and One Day Seminar on Escape from Tunnels", pp.169~179 (1999), Lyon
- Vauquelin, O, "Smoke Extraction Experiments in Case of Fire in a Tunnel", 37, pp.523~533 (2002)
- Oka,Y, "Control of Smoke Flow in Tunnel Fires", 25, pp.305~322 (1996)
- Wu,Y, "Control of Smoke Flow in Tunnel Fires Using Longitudinal Ventilation Systems - A Study of the Critical Velocity", 35, pp.363~390 (2000)
- 이성룡, "종류식 배연 터널 화재시 임계속도에 대한 종횡비의 영향에 관한 연구" (2004), 중앙대학교.
- Zhou,X. C, "Air Entrainment flow Field Induced by a Pool Fire", 100.1,, pp.52~60 (1995)
- Drysdale, "An Introduction to Fire Dynamics" (1985)
- Weckman,E. J, "Experimental Investigation of the Turbulence Structure of Medium-Scale Methanol Pool Fires", 105.3,, pp.245~266 (1996)
- Babrauskas,V, "Burning Rates,The SFPE Handbook of Fire Protection Engineering 2-1 to 2-15" (1998)
- Tewarson, A, "Smoke Point Height and Fire Properties of Materials National Institute of Standards and Technology Available from National Technical Information Services" (1998), Springfield,
- Edward,K. B, "Simplified Fire Growth Calculation, Fire Protection Handbook, 18th Edition, NFPA FPH1897, Section 11, Chapter 10." (1997)