海南岛万泉河口海岸动态及其整治对策

Preliminary Study on the Dynamic Evolution of the Coast Along Wanquan River Estuary and Its Regulating Proposals

通过应用沉积动力学方法计算了万泉河口口门均衡过水断面面积和沿岸输沙率,计算结果表明,波浪对万泉河口沿岸沉积物的输送起着控制作用,南北向输沙作用强烈,同时潮汐汊道目前处于不稳定阶段,口门断面的变化很大。在分析了万泉河口的自然地理条件以及基本演变规律后,还从增加纳潮量、扩大纳潮水域面积、整治沙美内海及其周边生态环境、建设导堤工程改善拦门沙的浅滩航道等方面提出了万泉河口潮汐汊道口门和航道治理的一些工程和生态措施。

In this paper, beach,riverbed and Shamei Lagoon sediment samples are analyzed. Longshore drift sediment transport rate and equilibrium cross-sectional areas of tidal inlet are calculated using the method of sedimentary dynamics. The result indicates that, longshore drift sediment transport is dominated by waves, and the sediment is intensively transported from south to north; the entrance channel cross-sectional areas are rapidly changing and in unstable state. Based on the above analysis, some measures are proposed to control the tidal inlet and waterway of Wanquan River estuary: increasing the tidal prism and enlarge the inlet area; harnessing the Shamei Lagoon and recovering the ecological environment.