黄河口海岸演变规律

利用观测资料,总结了在黄河水沙、波浪、海岸工程等因素作用下黄河口海岸的演变规律。研究发现：①黄河三角洲海岸演变不仅受黄河水沙、潮汐、潮流的影响,而且还明显受波浪、海岸工程等因素的影响;②黄河三角洲海岸演变的趋势是朝着垂直于东北强浪的方向发展;③刁口河停止行河后河口海岸蚀退的原因不仅是河流泥沙减少,而且还有海堤在波浪作用下引起的侵蚀。建议：①黄河三角洲社会、经济、生态等规划应给黄河口流路充分的空间,而且黄河口流路安排应遵循“先在三角洲两侧、后在中心”的顺序,这样可以充分利用渤海容沙体积,减缓黄河口淤积延伸对黄河下游河道的反馈影响;②近期把清水沟尾间河道改向莱州湾。

Evolution Pattern of the Yellow River Estuary Coast

The paper summarizes the evolution pattern of the Yellow River estuary under the actions of sediment,waves and coastal engineering works.It finds out through study that a) the coastal evolution of the Yellow River estuary is not only influenced by sediment,tidal and tidal current,but also notably influenced by waves and coastal engineering works;b) the tendency of the coastal evolution of the river develops towards to the northeast surf in a vertical direction and;c) the reasons of estuary erosion of Diaokou River after stopping the flow are not only the reduction of sediment,but also sea dike erosion under the wave action.It suggests that a) the social,economic and ecologic planning of the Yellow River estuary should provide sufficient space for the estuary flow path and follow the sequence of "the sides of estuary first and the central area later" while arranging the flow path.In this way,it can fully utilize the volume of sediment keeping capacity of the Bohai Sea to reduce the influence of sedimentation extension at the Yellow River estuary to the downstream channel and;b) to change the sink channel of Qingshuigou towards to the Laizhou Bay in the near future.