洞庭湖河湖疏浚工程数值模拟分析研究

针对洞庭湖区的洪水组成、水流泥沙演变、河道湖泊水系分布特点以及河道湖泊疏浚工程布局情况,利用GIS技术模拟洞庭湖地形变化,采用有限体积法建立了湖泊二维水力学计算模型预测疏浚工程实施后的水位、流量、流速流场变化,为河道、航道港口整治、河道疏浚清淤等工程决策与实施提供了可靠理论依据。

Study on Simulation Data Analysis of Dredging Project for Dongting Lake

Due to issues of Dongting lake district's flood composition,the evolution of sediment flow,the river and lake(R&L) distribution characteristic as well as the layout of R & L-dredging engineering,the article simulated the model of the Dongting Lake terrain change by using the GIS technology and adopted the limited volumetric method to establish the two-dimensional hydraulics computation model of lake in order to forecast the water level,the flow capacity,the speed of flow and changes of flow field after implemented the project,which have provided the reliable theoretic basis for the decision-making and implementation of renovation for river course,canal and harbor and river course-dredging engineering.