Browse > Article
http://dx.doi.org/10.9711/KTAJ.2020.22.4.469

A study on application of inflatable structure system for rapid blocking of sudden water in submerged floating tunnels  

Kim, Yeon-Deok (Dept. of Civil Engineering, Hoseo University)
Hwang, Beoung-Hyeon (Dept. of Civil Engineering, Hoseo University)
Kim, Sang-Hwan (Dept. of Civil Engineering, Hoseo University)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.22, no.4, 2020 , pp. 469-484 More about this Journal
Abstract
This study focused on shielding through inflatable structure in the event of sudden water inflow into the submerged floating tunnels. Currently, there is a lack of measures to deal with unexpected water in tunnels in Korea. Although water treatment facilities such as waterproofing and floodgates in tunnels are installed, there are limitations to the sudden inflow of large amounts of seawater or underground water. Also, floodgates cannot respond quickly to sudden damage due to slow blocking time. Accordingly, a study was conducted on the shielding rate and axial movement distance for inflatable structure. The results of the reduced model experiment confirmed that the number of inflatable structure and internal pneumatic pressure influence on the shielding rate. As the number of inflatable structure increased from one to two, the shielding rate increased by about 35 up to 40 percent. It was also confirmed that the shielding rate increased by about 4 percent as the internal pneumatic pressure increased from 0.2 bar to 0.3 bar. If we verify and further develop the results identified in this study through a real-size experiment, it will be able to be used as an effective waterproof measure for sudden water inflow into the undersea tunnels or underwater tunnels.
Keywords
Undersea tunnels; Underwater tunnels; Shielding rate; Inflatable structure;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Barbero, E.J., Sosa, E.M., Marinez, X., Gutierrez, J.M. (2013), "Reliability design methodology for confined high presssure inflatable structures", Engineering Structures, Vol. 51, pp. 1-9.   DOI
2 Kenyon, P. (2012), 35,000 Gallons of preventioncontaining a tunnel flood with an inflatable stopper, Tunnel Talk.
3 Kim, Y.D., Kong, M.T., Hwang, B.H., Kim, S.H. (2018), "An experimental study on the operation mode of rapid flooding protection system in tunnel", Journal of Korean Tunnelling and Underground Space Association, Vol. 20, No. 6, pp. 1147-1159.   DOI
4 Kim, Y.I., Cho, S.K. (2003), "Determination of segment sealing material for a subaqueous tunnel under the Han river in the Bundang railway", Proceedings of the 2003 Korean Society of Civil Engineers of Conference, Daegu, pp. 5414-5426.
5 Korea Institute of Civil Engineering and Building Technology (2010), Road design manual part 6 tunnel, Ministry of Land, Infrastructure and Transport, pp. 607, 17-607, 18.
6 Korean Concrete Society (2012a), Standard analysis of concrete structure, Kimoondang, Seoul, pp. 66-72.
7 Korean Concrete Society (2012b), Standard analysis of concrete structure, Kimoondang, Seoul, pp. 73-81.
8 Martinez, X., Davalos, J.F., Barbero, E.J., Sosa, E.M., Huebsch, W.W., Means, K., Banta, L., Thompson, G. (2012), "Inflatable plug for threat mitigation in transportation tunnels", Proceedings of the Society for the Advancement of Material and Process Engineering 2012 Conference, Baltimore, pp. 1-14.
9 Yoo, K.S. (2016), Design method of large expansion fabric-structure for flood damage mitigation in tunnel, Ph.D. Thesis, Dept. of Civil Engineering, Hoseo University, pp. 29-31.
10 Yoo, K.S., Lee, J.H., Kim, Y.D., Kim, S.H. (2015), "Model testing of leakage effect due to multi-cell inflater of rapid protection system in subsea tunnel", Journal of Korean Tunnelling and Underground Space Association, Vol. 17, No. 3, pp. 295-303.   DOI
11 Yoo, K.S., Lee, J.H., Kim, Y.D., Kim, S.H. (2016), "Friction behavior of inflatable structure system to protect rapidly flooding damages in subsea tunnel", Journal of Korean Tunnelling and Underground Space Association, Vol. 18, No. 1, pp. 109-117.   DOI