Numerical Simulation On Regulation For Baima Complex Beach Group In Wujiang River

Wujiang waterway beach, flowing hurry of mechanically and bending narrow slot, limit the disorder of waterway transportation development. Through the method of improving the regulation of flowing regime to improve its navigation capabilities, it needs to study the reach of evolution and causes of analysis.Based on the systematic analysis of development history of flowing mathematic model and status of wujiang river, accoding to the actual hydrological terrain material, it established one-dimensional mathematical model of wujiang river water and used the method of discrete equations to solve and verify the water surface and surface of the water line when the the water level was returned of Wujiang River of Three Gorges Reservoir Area. From two-dimensional flowing basic equations and basic theory, it used the finite volume method adopted to control equation and established a two-dimensional flow mathematic model to simulate the flowing beach of wujiang river before and after the renovation of changes.The main contents of this paper are:1) It verviewed of the basic situation of Wujiang River Beach Group project and analyzed the evolution river and the cause of river beach with the existing material.2) From the method of discrete systems to solve the control equation, it established a one-dimensional flowing mathematic model. From the finite volume method, it established a two-dimensional flowing mathematic model, the model verification results show that the model used to calculate the water level and flowing rate is closed to the measured data.3) According to rapids features of improving river, the channel level insurance and the regulation principle required to achieve, it makes the river system management program of Beach Group.4) Through a two-dimensional flowing mathematic model established by this artcle and applied to the research of Wujiang River Waterway in the beach group, it made the systematic analysis of the two treatment programs, by calculating, it showed that the flowing condition improved greatly over previous works and the Channel depth, flowing patterns were to achieve the desired goals after the implementation of Engineering Scheme.