基于ADCP数据拟合垂向分层流速的方法研究  

Research on Method of Fitting Vertical Stratified Flow Velocity Based on ADCP Data

作　　者：朱巧云 范伊玲 张沁函 ZHU Qiao-yun;FAN Yi-ling;ZHANG Qin-han(Changjiang River Estuary Bureau of Hydrology and Water Resources Survey,Changjiang Water Resources Commission,Shanghai 200136,China)

机构地区：[1]长江水利委员会水文局长江口水文水资源勘测局,上海200136

出　　处：《水电能源科学》2025年第2期88-92,共5页Water Resources and Power

基　　金：国家自然科学基金项目(42266006);江西省自然科学基金项目(20232BAB204089)。

摘　　要：鉴于长江口河段水流运动复杂,垂向流速分布呈多种剖面型式,根据ADCP实测数据,基于对数、幂函数和抛物线三种经典流速分布模型,推导出适合长江口河段计算水文测验分层流速的拟合模型,并提出根据实时水深情况,选择采用整体或局部构建垂向流速模型,以实现对垂向流速模型的实时最优构建。以长江口不同水域4个站点获取的不同水情、不同潮型条件下的实测资料为例,验证了所推导的垂向流速模型的正确性和可靠性。分析结果表明,该方法提升了ADCP数据计算水文测验分层流速的精度,精度指标可以达到三类精度的水文站。In view of the complexity of the flow movement in the Changjiang River estuary,the vertical velocity distribution presents various profile patterns.Based on the measured data of ADCP and the three classical velocity distribution models of logarithm,power function and parabola,a fitting model for the calculation of stratified velocity in the Changjiang River estuary is derived.According to the real-time water depth,the vertical velocity model can be constructed either as a whole or as a part to achieve the real-time optimal construction of vertical velocity model.The ADCP measured data obtained at four fixed points of the Changjiang River estuary under different water conditions and different types of tide are taken as examples to verify the correctness and reliability of the vertical velocity model.The analysis results show that the method can improve the accuracy of ADCP data calculation of stratified flow rate in hydrologic survey,and the accuracy index can reach the third class accuracy of hydrology station.

关 键 词：长江口 ADCP 水文测验 分层流速 流速模型 

分 类 号：TV143[水利工程—水力学及河流动力学] P332.4[天文地球—水文科学]