滨海平原河网浅水动力分区特性研究

以浙江省姚西北地区平原河网为例,简化感潮河段闸门控制运行的数学模型,研究挡潮闸运行期间闸上游河道水面线的扰动规律.据此,对河网进行水动力分区,确定各区洪水水力特性.应用HEC-RAS软件进行数值计算,结果表明,该结论合理、可靠,可为姚西北平原河网水动力分析和防洪调度提供理论和技术支持.

Shallow water dynamic partitioning features of coastal plain river network

Grasping the hydrodynamic division characteristics of coastal plain river network is the key to rational allocation of drainage projects, such as gates, pumps, etc. Taking river network of northwest plain of Yuyao city as research area, a simplified unsteady flow model is applied to tidal reach, in order to study the variation process of water surface profile during the operation period of tidal gates. Model results are compared with simulation data calculated by HEC-RAS; the agreement between the two is considered to be quite satisfactory. Work of this paper can be helpful to hydrodynamic analysis and flood control operation of research area theoretically and technologically.