Study of Flood Control Capability and Advanced Application of Multiple Dams Constructed in Series
Hideo Oshikawa*, Yuka Mito**, and Toshimitsu Komatsu*
*Graduate School of Engineering, Department of Urban and Environmental Engineering, Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka-City 819-0395, Japan
**Kyushu Office, Waterworks Structure Division, CTI Engineering Co., Ltd., CTI Fukuoka Building, 2-4-12 Daimyo, Chuo-Ku, Fukuoka-City 810-0041, Japan
The new concept for flood control called ‘Cascade’ method which permits dams to overflow around an upstream region with a sequence of dams constructed in a river is proposed. Multiple small scale dry dams should be constructed in series instead of a large scale dam in order to prevent flood disaster and preserve the natural environment. Recently a flood control dam with a bottom outlet hole as its regular spillway, known as ‘dry dam’, has been reviewed, planned and built in some sites in Japan. Under a condition of a common reservoir capacity, the Cascade type flood control permitting upstream dams to overflow except for the most downstream dam in a river is compared with a conventional one not to overflow each dam in a numerical simulation. As a result, it is made clear that the Cascade method using multiple dry dams is much more effective than the conventional one. In this connection, the Cascade type flood control method permitting upstream dams to overflow from emergency spillways except for the most downstream dam can be applied to normal storage dams with slide gates operated conventionally. Therefore, it could become an effective adaptation method for the global warming problem since it is performed by only changing how to operate slide gates in existing storage dams constructed in series. In addition, we also propose a new type of dry dam that has a closable and openable gate for its regular spillway primarily to retain the water for the water utilization. The new type of dry dam, which should be constructed in the upper reach away from the existing downstream storage dam needing still more its capacity for water utilization, ensures the amount of water available for the use by closing the regular spillway after the new dry dam is at full capacity, and the flood control capacity of the dams including the new dry dam is stronger than that of the normal dams owing to the storage function with the new dry dam. The new dry dams may improve the water utilization, the flood control, and environmentfriendliness under the current condition in Thailand damaged by the severe flood in 2011.
-  The Intergovernmental Panel on Climate Change (IPCC), “Climate Change 2007: The Physical Science Basis,” Cambridge University Press, 996p., 2007.
-  Science Council of Japan, Committee on Planet Earth Science and Committee on Civil Engineering and Architecture, Subcommittee on Land, Society and Natural Disasters, “Proposal, Adaptation to Water-related Disasters Induced by Global Environmental Change,” June 26, 2008.
-  H. Oshikawa, A. Hashimoto, K. Tsukahara, and T. Komatsu, “Impacts of Recent Climate Change on Flood Disaster and Preventive Measures,” Journal of Disaster Research, Vol.3, No.2, pp. 131-141, 2008.
-  T. Sumi, “Designing and Operating of Flood Retention ‘Dry’ Dams in Japan and USA,” Advances in Hydro-Science and Engineering, Vol.8, pp. 1768-1777 (CD-ROM), 2008.
-  M. E. M. Shahmirzadi, T. Sumi, and S. A. Kantoush, “Echo-Friendly Adaptation Design for Stilling Basin of Masudagawa Flood Mitigation Dam,” Proceedings of the International Symposium on Urban Flood Risk Management (UFRIM), pp. 69-74, September 2011.
-  T. Sumi, S. A. Kantoush, and A. Shirai, “Worldwide Flood Mitigation Dams: Operating and Designing Issues,” Proceedings of the International Symposium on Urban Flood Risk Management (UFRIM), pp. 101-106, September 2011..
-  Y. Nakashima, H. Oshikawa, and T. Komatsu, “Study on Improvement in the Flood Control Ability of a Dry Dam,” Advances in River Engineering, Vol.15, pp. 417-422, 2009 (in Japanese).
-  A. D. Ziegler, L. H. She, C. Tantasarin, N. R. Jachowski and R. Wasson, “Floods, False Hope, and the Future,” Hydrological Processes, 2012, DOI: 10.1002/hyp.9260, Wiley Online Library (wileyonlinelibrary. com).
-  D. Komori, S. Nakamura, M. Kiguchi, A. Nishijima, D. Yamazaki, S. Suzuki, A. Kawasaki, K. Oki, and T. Oki, “Characteristics of the 2011 Chao Phraya River flood in Central Thailand,” Hydrological Research Letters, Vol.6, pp. 41-46, 2012.
-  D. Komori, M. Kiguchi, and S. Nakamura, “The Chaophraya flood 2011 and flood control measures for future,” Journal River, Japan River Association, pp. 3-10, January 2012 (in Japanese).
-  T. C. Peterson, P. A. Stott, and S. Herring, “Explaining Extreme Events of 2011 from a Climate Perspective,” Bulletin of the American Meteorological Society, Vol.93, Iss.7, pp. 1041-1067, July 2012.
-  H. Oshikawa, T. Imamura, and T. Komatsu, “Study on the Flood Control Ability of a Dry Dam Used as a Flood Retarding Basin in a River,” Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.67, No.4, pp. I 667-I 672, February 2011 (in Japanese).
-  JSCE, “Hydraulics Formulae: Hydraulics Worked Examples with CD-ROM, ” Japan Society of Civil Engineers, ISBN4-8106-0203-6 C3051, 2002 (in Japanese).
-  H. Oshikawa, Y. Mito, and T. Komatsu, “Quantitative Estimation on Flood Control Capability of a Dry Dam for a Hydraulic Bore,” Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.68, No.4, pp. I 871-I 876, 2012 (in Japanese).
-  R.V. Giles, J.B. Evett, and C. Liu, “Fluid Mechanics and Hydraulics, Third Edition,” McGraw-Hill, 378p.
-  S. H. Lamb, “Hydrodynamics, 6th Edition,” Cambridge, 738p., 1932.
-  JSCE, “Hydraulics Formulae 1999,” Japan Society of Civil Engineers, ISBN4-8106-0201-X, 713p., 1999 (in Japanese).
-  S. Supratid, “THAILAND GREAT FLOOD 2011: LOOKING BACK AND LOOKING FORWARD,” Proceedings of ICCWP 2012, September 2012.
-  International Centre for Water Hazard and Risk Management (ICHARM), Rainfall-Runoff-Inundation Forecasting in the Chao Phraya River,
http://www.icharm.pwri.go.jp/news/news_e_/111024_thai_flood_e.html [accessed Nov. 9, 2011]
-  N. Kanchit, “A Presentation Material on Flow Discharge Data on Dams with Historical Flood Events from Bhumibol Hydro Power Plant,” Personal communication, February 2012.
-  T. Tebakari, J. Yoshitani, and C. Suvanpimol, “Effect of Large Scale Dams on Hydrological Regime in the Chao Phraya River Basin, Kingdom of Thailand,” Annual Journal of Hydraulic Engineering, JSCE, Vol.48, No.1, pp. 481-486, 2004 (in Japanese).
-  T. Tebakari and J. Yoshitani, “Effect of the Large-Scale Dams on the Hydrological Regime; A Case Study in Chao Phraya River Basin, Kingdom of Thailand,” J. Japan Soc. Hydrol. & Water Resour., Vol.18, No.3, pp. 281-292, 2005 (in Japanese).
-  T. Tebakari, K. Fukami, C. Suvanpimol, M. Miyamoto, and T. Yamada, “Foundational Study on Water Use and Flood Control Effect by the Large Scale Reservoir – A Case Study in Upper Chao Phraya River Basin, Kingdom of Thailand,” Annual Journal of Hydraulic Engineering, JSCE, Vol.49, No.1, pp. 457-462, 2005 (in Japanese).
-  T. Tebakari, J. Yoshitani, C. Suvanpimol, M. Miyamoto, and T. Yamada, “Assessment of Flood Control and Water Supply Abilities of Large Scale Reservoir using Numerical Experiment – A Case Study in the Chao Phraya River Basin, Kingdom of Thailand –,” J. Japan Soc. Hydrol. & Water Resour., Vol.20, No.3, pp. 145-155, May 2007 (in Japanese).
-  Japan Commission on Large Dams, “Dams in Japan,” 514p., 2012.
-  T. Sumi, “Dry Dam in Austria,” Engineering for Dams, Japan Dam Engineering Center, No.277, pp. 1-13, October 2009 (in Japanese).
-  T. Sumi, S. Funabashi, and A. Shirai, “Dry Dam in Austria – A Continued Report –,” Engineering for Dams, Japan Dam Engineering Center, No.287, pp. 16-28, August 2010 (in Japanese).
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