Study on Dynamic Balance of Sediment Transported by Present Yellow River Flow Path to the Sea

According to the hydrological data of Lijin Station between 2001-2010 and field observed cross-section data,interannual change characteristics of Qingshuigou Route had been studied in terms of incoming flow and sediment conditions,main flume area,average river bed elevation longitudinal profile and river length.The results show that annual flow discharge entering the Yellow River estuary after Xiaolangdi Reservior application has maintained about 2×1010m3,annual sediment 1.77×108 t,total average sediment concentration 9.3 kg/m3,which are relatively stable and helpful for dynamic balance of sediment transported.Interannual stability of main flume area,average river bed elevation profile and river length since Lijin Station between 2007-2010 indicates that present Yellow River flow path to the sea has achieved dynamic balance of sediment transported in conditions of incoming flow and sediment,river boundary and ocean dynamics.