The Numerical Simulation Of Sediment Erosion And Deposition On Jinghe River Regulation Project

The river has play an important leading role in the development of the city,Not only as an important transportation route,but also to provide adequate water and drainage place for industrial development,flood land is also a good land for urban development.Thus,along the river often called spindle and industrial development of the city's most active development space.However,the river in its natural state formula is evolving in accordance with its own laws,this will bring adverse effects of urban development,even a threat to people's life and property safety.Manual interv ention is necessary for the natural evolution of the river,in order to eliminate or mitigate its adverse effects.In this paper,the development and current situation of sediment deposition in the river training works at home and abroad about the calculations have been reviewed,in relation to the numerical simulation of problems related to the commentary.To satisfy the needs of river erosion lateral deformation calculation and suitable for long duration long river bed deformation calculation.First this paper solving the one-dimensional flow of hydraulic elements obtained in the vertical disribution,and use the simplified two-dimensional equation for solving vertical average velocity and boundary shear stress distribution in the cross setction,and the result is used riverbed longitudinal and transverse silting calculation in order to establish a quasi-two-dimensional mathematical model for sediment.In order to better simulate the Jinghe River on water and sediment characteristics were solved suspended load and bed load sediment divided particle size group equation to complete the calculation of sediment deposition.By using Taoyuan hydrological station design 45 years of water and sediment series,the mathematical model was validated calculation,calculation results is similar to no natural river rushing silt circumstances.Using this mathematical model,Calculating Jinghe River New City Reservoir carried sediment deposition and predict silting of morphological changes.a longitudinal section siltation.erosion of the reservoir area,the capacity curves for different operating life of the reservoir area;analysis of different operating years at each changes in the hydraulic elements;comp are the pros and cons of different dam scheme,and ultimately determine a reasonable way of flushing operation,and provide reference for practical engineering The results can be similar a reference for the similar urban river flood control project.