曹娥江至宁波引水工程平面二维水流数值模拟

Two-dimensional numerical simulation of flow for water diversion project from Cao'e River to Ningbo

曹娥江至宁波引水工程作为浙东引水工程的重要组成部分,与大厍和通明船闸的运行关系密切,存在引水水流对航运条件的影响,为此建立引水工程平面二维水流动力数学模型,并用大厍引水工程1∶50模型试验资料对引水工程方案进行对比验证和优化。结果表明:通明引水工程一期和二期上下游横向流速、纵向流速和回流流速都能满足通航设计规范,工程的建设对通航影响不大,设计方案是合理的;在引水工程的进、出口横向流速最大,过往船只需注意即可。

The water diversion project from the Cao＇e River to Ningbo is an important component of water diversion in eastern Zhejiang Province.The water diversion project is closely related to Daku and Tongming Lock,and therefore affects shipping conditions.A two-dimensional mathematical model of the diversion project was established in order to investigate the effect.The diversion project was optimized by using experimental data from the 1：50 physical model of the Daku diversion project.The results indicated that the transverse velocity,longitudinal velocity,and circulation velocity upstream and downstream of the first and second stage of Tongming Lock met the requirements of shipping design standards. No significant influence of the project construction on shipping conditions was found,and the design proposal was reasonable.The transverse velocity at the inlet and outlet of the diversion project was at its maximum,so passing ships should be cautious.