强潮河口水下地形测量潮位控制研究

钱塘江河口属于强潮河口,具有潮差大、流急、地形复杂和局地潮汐变化大等特点,对潮位控制设计与实施造成较大困难。为解决钱塘江河口水下地形测量潮位控制难题,针对强潮河口的水下地形和潮汐特征进行分析,提出了该区域潮位控制的潮位站布设方案与作业时间要求。实测数据表明,只要合理布设潮位站、选择合适的时间段作业,强潮河口水下地形测量的潮位控制可以达到规范精度要求。

Study on Control of Underwater Topographic Survey Tide in Strong Tidal Estuary

The Qian Tang River estuary is the strong tidal estuary,it has the characteristics of large tidal range,rapid flow,complex terrain and local tidal changes etc,which makes it difficult to control the project of tidal level.In order to solve the problem of controlling the tidal level for Qian Tang Estuary underwater topographic survey,this paper analyzes the underwater topography and tidal characteristics of the tidal estuary,and puts forward the layout scheme and the time requirement of the tidal level control in Qian Tang River estuary.The measured data shows that,it can achieve the specification precision requirements for the strong tidal estuary underwater topographic survey if the tide level station were rationally designed and the operation time were appropriately chosen.