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http://dx.doi.org/10.9711/KTAJ.2019.21.6.887

A study on the operation characteristics of oversized exhaust port applicable to double-deck tunnel  

Park, Jinouk (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology)
Yoo, Yongho (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology)
Kim, Yangkyun (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology)
Park, Byoungjik (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology)
Kim, Whiseong (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.21, no.6, 2019 , pp. 887-895 More about this Journal
Abstract
Recently, the number of underground road development projects has been increasing to solve traffic problems in the national capital region and metropolitan areas with intensified overcrowding, and there has been a tendency to plan underground roads by applying a double-deck tunnel technology that has advantages in constructability and economical efficiency. The double-deck tunnel has a structure where one excavation section is divided into two parts and used as up and down lines, and is mainly used as a road for small vehicles only due to its low floor height. In addition, due to the small cross-sectional area, it has characteristics different from those of general road tunnels in terms of ventilation and disaster prevention. In this regard, this study proposed an operational plan that applies an oversized exhaust system, which is one of semi-transverse ventilation systems, to small cross-sectional tunnels like double-deck tunnel with low floor height, and a comparative analysis between smoke exhaust characteristics according to the fire occurrence locations and oversized exhaust systems was conducted using the Fire Dynamics Simulator (FDS). The results showed that unlike uniform exhaust, intensive smoke exhaust using the oversized exhaust port maximized the delay effect of smoke diffusion and limited the smoke within 50 m above and below the fire point.
Keywords
Double deck-tunnel; Semi-transverse ventilation system; Oversized exhaust port; Local smoke control; Smoke exhaust;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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1 Choi, P.G., Baek, D.S., Yoo, J.O., Kim, C.Y. (2019), "A study on the fire characteristics according to the installation type of large smoke exhaust port in a small cross sectional tunnel fire", Journal of Korean Tunnelling and Underground Space Association, Vol. 21, No. 1, pp. 201-210.   DOI
2 Jo, H.J., Chun, K.M., Min, D.K., Kim, J.W., Beak, J.H. (2016), "A fundamental study for optimizing the supply and exhaust port opening ratio in road tunnels with transverse ventilation system", Journal of the Korean Society of Mineral and Energy Resources Engineers, Vol. 53, No. 2, pp. 140-148.   DOI
3 Kim, J.Y., Yoo, J.O. (2008), "A numerical study on characteristics of smoke exhaust in road tunnel fires for different ventilation system", Fire Science and Engineering, Vol. 22, No. 3, pp. 201-207.
4 Ministry of Land Infrastructure and Transport (2016), Road tunnel disaster prevention facility installation & management guideline, pp. 32-39.
5 Ministry of Land Infrastructure and Transport (2019), Urban small car tunnel disaster prevention facility installation & management guideline, pp. 12-13.
6 Rie, D.H., Yoo, J.O., Shin, H.J. (2006), "A study on the effective smoke exhaust amount of load-tunnel with semi-transverse ventilation - balanced exhaust case -", Journal of the Korean Society of Safety, Vol. 21, No. 2, pp. 46-51.
7 Ryu, J.O., Kim, H.G. (2018), "A study on the ventilation characteristics and design of transverse ventilation system for road tunnel", Journal of Korean Tunnelling and Underground Space Association, Vol. 20, No. 2, pp. 305-315.   DOI
8 Ryu, J.O., Kim, J.S., Rhee, K.S. (2017), "An analytical study on the fire characteristics of the small tunnel with large smoke exhaust port", Journal of Korean Tunnelling and Underground Space Association, Vol. 19, No. 3, pp. 375-388.   DOI
9 Ryu, J.O., Kim, J.S., Rie, D.H. (2016), "Numerical study on the supply and exhaust port size and fire management method in the semi-transverse ventilation system for road tunnel", Fire Science and Engineering, Vol. 30, No. 2, pp. 68-74.   DOI
10 Statistics Korea (2016), Population and Population Density by Gender and Age.
11 Yoo, J.O., Oh, B.C., Kim, H.G. (2013), "A numerical study on the characteristics of the smoke movement and the effects of structure in road tunnel fire", Journal of Korean Tunnelling and Underground Space Association, Vol. 15, No. 3, pp. 289-300.   DOI
12 Yoo, J.O., Yoon, S.W., Rie, D.H. (2006), "A study of smoke exhaust rate for the transverse ventilation with oversized exhaust ports in road tunnel", Journal of the Korean Society of Safety, Vol. 21, No. 4, pp. 7-12.
13 Yoo, Y.H., Yoon, C.H., Yoon, S.W., Kim, J. (2005), "Experimental study on the interval of emergency exits in long traffic tunnels", Journal of Korean Society for Rock Mechanics, Vol. 15, No. 1, pp. 61-70.