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(RL) 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.