万泉河嘉积至博鳌河段河道水力特性分析

依托万泉河一期航道建设研究,建立了万泉河嘉积至博鳌河段二维正交曲线水流数学模型。首先采用天然资料对模型进行率定,通过有关参数调整,使数值计算成果与天然实测资料达到精度要求。依据对枯水期大潮、枯水期小潮、洪水期大潮3次潮流模拟成果,详细分析了目标河段地形、水位、比降、流速的变化特征,给出了潮区界、潮流界变化规律,明确了感潮河段的具体位置,并重点介绍了博鳌水域流场分布,为万泉河航道建设规划提供了技术支撑。

Hydrodynamic characteristics of reach from Jiaji to Bo'ao in Wanquan river

Based on the study of Wanquan river navigation channel first phase construction,we established the orthogonal curve 2D current mathematical model for the reach from Jiaji to Bo’ao in Wanquan river.Firstly,the model was verified with the nature current materials,and the calculated result was consistent with the nature data by adjusting some parameters.Using results of simulation the spring tide and neap tide in dry season as well as spring tide flood season,we analyzed the variation characteristics of underwater topography,water level and gradient ratio along the river reach.The variations of the tidal limit and tidal current limit were displayed.The specific location of tidal reach was given.Finally,2D plane flow field about Bo’ao reach was analyzed.The results provides a technical support for the navigation channel construction of Wanquan river.