Flume Experiments Of The Different Braided River

Braided river is comes up with a method in studying the river.Previous studies on braided river are more likely qualitative studies,which are partial studies,lacking correlation and quantitative research.Based on literature research,in consideration of the hydrodynamic characteristics of braided river,the paper has simulated a number of conditions such as hydrodynamics and sanding composition.Depending on above simulated results,this paper analyzes the sedimentary evolution of braided rivers and relevant influencing factors.Due to the erosion of the braided waterways,both sides of the head part of the mid channel bar are subject to fluvial erosion.Consequently,the body part will migrate downward.Along with such evolution,the downstream migration rate will decline,and the body part finally develop into a stable condition.As the asymmetry of the braided waterways on both sides,one side undergoes constant erosion while the other side experiences continuous sediment.The sediment development at the tail part depends on the hydrodynamic intensity of the braided waterways.Such development has a positive correlation with the hydrodynamic intensity.The extended sediment finally fills the braided waterways.The paper,by analyzing the models and studying previous materials,comes up with a method in studying the river sediment.A number of figures are put forward by measuring the width,length of mid channel bar and the width of braided rivers in practical environment.Based on such analysis,the paper puts forward the correlation formula between the width of braided rivers and its length,and the formula between the width of mid channel bar and the width of braided river,which will shed light on the sand distribution of the braided rivers.