EFFECT OF SAND BYPASSING AT SAKUMA DAM IN TENRYU RIVER AS A MEASURE AGAINST EROSION OF TENRYU RIVER DELTA COAST
Proceedings of the 32nd International Conference
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Keywords

river delta coast
contour-line-change model
Tenryu River
sand bypassing
dam

How to Cite

Miyahara, S., Uda, T., Furuike, K., Serizawa, M., San-nami, T., & Ishikawa, T. (2011). EFFECT OF SAND BYPASSING AT SAKUMA DAM IN TENRYU RIVER AS A MEASURE AGAINST EROSION OF TENRYU RIVER DELTA COAST. Coastal Engineering Proceedings, 1(32), sediment.106. https://doi.org/10.9753/icce.v32.sediment.106

Abstract

The long-term evolution of the Tenryu River delta associated with sand bypassing at several dams is investigated using the contour-line-change model considering the change in grain size. The effect of the increase in sediment yield from the river mouth on the nearby coasts is numerically predicted. When the sediment yield is artificially increased, the supplied sediment is mainly deposited around the river mouth, resulting in a large shoreline advance, but it takes a longer time for a sandy beach far from the river mouth to recover. Another measure, such as sand bypassing of the coast, is required to recover sandy beaches downcoast.
https://doi.org/10.9753/icce.v32.sediment.106
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References

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