Effect of dike line adjustment on the tidal bore in the Qiantang Estuary, China*

• 作 者: Jian Zeng Gang Chen Cun-hong Pan Zhi-yong Zhang
• 机 构: Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, China;Zhejiang Provincial Key Laborat
• 出 处: 水动力学研究与进展B辑
• 发表日期: 2017年3期
• 关键词: Qiantang Estuary tidal bore physical model dike line land use

In this paper, the effect of the dike line adjustment on the Qiantang Tidal Bore (QTB) is studied by physcial experiments.A lab-scale physical model of the Qiantang Estuary is built and the tidal bore is generated. With this model, the formation and pro-pagation processes of the tidal bore are simulated with or without the dike line adjustment. It is shown that the adjusted dike line changes the direction of the reflected tidal bore. The height of the tidal bore increases in the upstream region where the dike line is contracted. In the tested bent and forking regimes, the bore height at the upstream station is increased by 0.10 m and 0.04 m,respectively. Furthermore, the crossing bore still exists near the Daquekou station and the location slightly moves by about 3 km to the downstream region.