Author(s): Zhao Hui-Ming; Zhang Yue-Feng; Tang Li-Qun; Wang Chong-Hao; Guo Chuan-Sheng; Liu Da- Bin; Feng Hao-Chuan; Wang Yu-Hai; Lu Jing
Keywords: Two-dimensional mathematical model; Water and sediment dynamics; The yangtze river estuary
Abstract: With the economic development of estuarine and coastal areas, beach reclamation project has become the main reason for the change of coastline contour, which further affects the flood control pattern and the safety and stability of seawall. In this paper, regarding the Yangtze River Estuary and Hangzhou Bay as an organic whole, a two-dimensional mathematical model is established to study the influence of beach utilization on flood control and tide control focusing on the Yangtze River Estuary, which could simulate the movement of water and sediment and water exchange of the Yangtze River Estuary. The research scope covers the water areas from Jiangyin to the Yangtze River Estuary and Hangzhou Bay. Based on the existing research results and historical measured data, the tide level and tidal current of the established model are verified by the terrain data and synchronous hydrological observation data in 2012. The results show that the mathematical model is reasonable for boundary treatment and roughness selection, which can better reflect the dynamic characteristics of water and sediment in the Yangtze River Estuary, and can be used for the simulation study of the impact of beach use on flood control and tide control.