Influences of Topographical Change of Qiantang River on Design Flood of Puyang River

Abstract:

Since the Puyang River in Zhejiang province is easily influenced by tidal backwater of Qiantang River, its design flood level also fluctuates with topographical change of Qiantang River. The topography of Qiantang River has taken place considerable change by climate changes and human activities in recent years, and it had caused flood level of Wenyan station obvious rise from 0.22m to 0.89m, which produces great impact on flood level of Puyang River. This paper adopted the two-dimension numeral model to simulate the impact on flood level of the Puyang River which is caused by tidal backwater of Qiantang River. The results indicate that flood levels of Meichi satiation rise 3-30cm, and which of Linpu satiation rise 4-76cm when they respectively encounter with flood of Qiantang River from once every 100 years to once every 5 years. From the results, we can see the change of topographical of Qiantang River in recent years produces great impact on flood level of the Puyang River.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 2064-2067
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.2064
• Online since: September 2013
• Authors: Tao Ding*, Li Ming Liu
• Keywords: Flood, Qiantang River, Topographical Change

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