PROPOSAL ON THE EFFICIENT MITIGATION MEASURES FOR SEDIMENT DEPOSITION IN SMALL-MEDIUM RIVERS

1 2 2 2 3 4 Kengo OSADA, Masahiko TOKUNAGA, Satoshi NAGATA, Tsuyoshi HIDA,

Satoshi SHONO and Toyokatsu YUUKI

1

774-0017 265 2 770-8570 1 1

3 774-0030 46 4

It is necessary to develop a method for efficient management to reduce the sediment deposition in the small-medium rivers. In this study, the maintenance method is proposed for the improvement of sediment transport by moving the deposited materials to the right place in the channel. At first, we show the method for finding the process of sediment deposition and characteristics of river channel by using both the two-dimensional riverbed variation analysis and Fukuoka’s formula. And, the method is proposed to design proper longitudinal and cross-sectional form to correct the sediment transport problem.

Key Words : Small-medium river, sediment deposition, 2-D riverbed variation analysis, Fukuoka’s equation, cross-sectional form

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1) (XXIV)

pp.123-164 2013. 2)

56 pp.I_1423-I_1428 2012.

3) Armoring195 pp.55-65 1971.

4) 206 pp.59-69 1972.

5) B1

Vol.69 No.4 pp.I_1165-I_1170 2013.

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