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http://dx.doi.org/10.3741/JKWRA.2019.52.6.397

Forecasting of flood travel time depending on weir discharge condition using two-dimensional numerical model in the channel  

Lee, Hae-Kwang (Department of Civil Engineering, Daejin University)
Oh, Ji-Hwan (Department of Water Resources Research Center, K-water Institute)
Jang, Suk-Hwan (Department of Civil Engineering, Daejin University)
Song, Man-Kyu (Department of Civil & Environmental Engineering, Daejin University)
Publication Information
Journal of Korea Water Resources Association / v.52, no.6, 2019 , pp. 397-409 More about this Journal
Abstract
Gate operation of hydraulic structures is important for proper management in rivers. In this study, the characteristics of flood time were analyzed and predicted using the HEC-RAS model, which is capable of one-dimensional and two-dimensional connectivity analysis of the main points downstream of the Geum river. As a result, flood travel time was decreased once discharge increase and downstream water level rising. However, When the floodplain was overflowed, the arrival time increased due to the rapid increase of the river width. Also, the same condition, flood wave travel time at the major point was approximately twice as fast as water level rising travel time, indicating that waves progressed faster than actually water. Using the results of this study, it will be helpful in the river.
Keywords
Flood wave travel time; HEC-RASver5.0.5; Multi-function weirs;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Hydrologic Engineering Center (HEC) (2016). HEC-RAS river analysis system 2D modeling user's manual version 5.0. CPD-68A, US Army Corps of Engineers.
2 Kim, J.-Y., and Lee, C.-G. (2011). "A study on the estimation of the downstream arrival time with the upstream flow by utilizing u-IT equipment." Journal of the Korea Academia-Industrial Cooperation Society, Vol. 12, No. 8, pp. 3594-3602.   DOI
3 Korea Water Resources Corperation (K-Water) (2016). study on effect analysis and management improvement of multi-function weir-barrage in Geum river and Youngsan river. 2016-WR-GP-411-1659.
4 Lee, E.-R., Shin, C.-K., and Kim, S.-H. (2006). "The establishment and application of hydraulic channel routing model on the Nakdong river (i) theory and evaluation of travel time." Journal of Korean Wetlands Society, Vol. 8, No. 1, pp. 73-82.
5 Lee, E.-S., Heo, J.-H., and Go, I.-H. (2003). "A study on determining the flood concentration time in Geum river Basin using river channel routing model, proceedings of the 2003 conference of the Korea Water Resources Association." Journal of the Korea Water Resources Association, Gyeong-Ju, Korea, pp. 615-618.
6 Lee, J.-K., and Kim, J.-Y. (2006). "Forecasting of water level rising travel time on Han River by the discharges of Paldang Dam." Proceedings of the 2006 Korean Society of Civil Engineers, Journal of the Korean Society of Civil Engineers, Seoul, Korea, pp. 2060-2063.
7 Ministy of Land, Intrastructure and Transport (MOLIT) (2016). The fourth water resources long term total design (2001-2020). 11-1613000-001716-13.
8 Oh, J.-H. (2018). Analysis and improvement of multi-function weir operation considering discharge and flood wave travel time. Ph. D. dissertation, University of Daejin, Pocheon, Korea.
9 Pierre, Y. J. (2002). River mechanics. University of Cambridge, United States of America.
10 Park, B.-J., Kang, G.-S., and Jung, K.-S. (1997). "A flood routing for the downstream of the Kum river Basin due to the Taechong dam discharge." Journal of Korea Water Resources Association, Vol. 30, No. 2, pp. 131-141.
11 Richards, Z., Gray, S., Varga, I., and Babister, M. (2012). "How much time do we have? the variability of riverine flood wave routing speed." Proceeding of Floodplain Conference, pp. 1-7.
12 Woo, H.-S., Kim, W., and Ji, U. (2015). River hydraulics. Chungmungak, Korea.
13 Woo, H.-S., Kim, W., and Lee, J.-W. (1995). "Verification of the model for wave propagation by water release from reservoirs." Journal of the Korean Society of Civil Engineers, Vol. 15, No. 6, pp. 1615-1625.
14 Hwang, E.-H., Kwon, H.-J., Lee, G.-S., and Koh, D.-K. (2008). "Measurement of floodwater reach time in Gum river using ubiquitous technology." Proceedings of the 2008 Conference of the Korea Water Resources Association, Journal of Korea Water Resources Association, Gong-Ju, Korea, pp. 2238-2243.
15 Yoon, Y.-N., and Park, M.-J. (1992). "Forecasting of peak flood stage at downstream location and the flood travel time by hydraulic flood routing, Proceeding of the 2003 Conference of the Korea Water Resources Association." Journal of Korea Water resources Association, Seoul, Korea, pp. 300-309.
16 Choi, H., and Lee, E. (2015). "Scenario analysis of flood travel time using hydraulic model in downstream of Nakdong river." Journal of Korea Water Resources Association, Vol. 48, No. 3, pp. 197-207.   DOI
17 Chow, V. T. (1959). Open-channel hydraulics. McGraw-Hill Book co., New York, United States of America.