渤海湾滨海平原河网地区降雨径流模拟  

Simulation of Rainfall and Runoff in Bohai Bay Plain River Network Area

作　　者：罗珊 李大鸣[2] LUO Shan;LI Da-ming(College of water Resource Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;State Key Laboratory of Hydraulie Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China)

机构地区：[1]太原理工大学水利科学与工程学院,山西太原030024 [2]天津大学水利工程仿真与安全国家重点实验室,天津300072

出　　处：《水电能源科学》2020年第5期6-10,共5页Water Resources and Power

基　　金：国家自然科学基金项目(51079095);国家自然科学基金创新研究群体科学基金项目(51021004)。

摘　　要：渤海湾滨海平原河网地区河道纵横交错,流态多样,降雨径流过程复杂。为准确模拟其降雨径流过程,在水文特征数据矢量化的基础上,将以二维非恒定浅水运动方程为控制方程的二维水动力模型与以河道汇流关系及水文方法为基础的一维河道拟序汇流模型相耦合,建立了适用于平原河网地区的降雨径流模型。经实测数据验证,模型可靠。研究表明,该模型可模拟计算渤海湾滨海平原2015年各时刻各处产流量、水位、流速及其变化过程;计算得出各河道的入水、出水水量及主要河流的入海水量,实现了对平原河网地区的降雨径流模拟。In plain river network area,the river channels are criss-crossed and the flow pattern is multiple so that the rainfall runoff process is complex.Based on the vectorization of hydrological characteristic data,two-dimensional hydrodynamic model with two-dimensional unsteady shallow water motion equation as the control equation and one-dimensional river sequence confluence model established by hydrological method are coupled to simulate the rainfall runoff process in plain river network area accurately.And the rainfall-runoff model is applied to the coastal plain of Bohai Bay.The model is verified to be reliable by the measured data.The research shows that the model can simulate runoff generation,water level,flow velocity and its variation process in the Bohai Bay coastal plain in 2015.The inflow and outflow volume of rivers and the runoff flowing into the sea from main rivers are calculated.This study achieves the simulation of rainfall runoff process in plain river network area.

关 键 词：平原河网 河网提取 二维水动力模型 河道拟序汇流模型 降雨径流模拟 渤海湾滨海平原 

分 类 号：TV121[水利工程—水文学及水资源]