| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
A new flood control method which permits dams to overflow around an upstream region with a sequence of dams constructed in a river was 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 constructed in Japan. Under a condition of a common reservoir capacity, the new method permitting upstream dams to overflow except for the most downstream dam was compared with a conventional one not to overflow each dam. As a result, it was made clear that the new method using dry dams is much more effective than the conventional one. In this connection, the new method can be applied to normal storage dams with slide gates operated. Therefore, it could become an effective adaptation method for the global warming problem.
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