Abstract:The upper reaches of the Yangtze River are an important part of the golden waterway of the Yangtze River.The intake of the Jingangtuo pumping station in the Western Chongqing Water Resources Allocation project is located on the left bank of the Shengzhongba waterway in the upper reaches of the Yangtze River.In recent years,the channel behind the Guandaoqi spur dike has been further affected by floods.The construction of the water intake will cause the channel to flow over,resulting in a decrease in the water level of the main channel and shallow navigation obstruction.In extreme cases,it may also affect the normal operation of the water intake facilities.To ensure the safety of waterway navigation and the efficiency of water intake,this paper puts forward the corresponding treatment scheme.Through the riprap backfill and throwing the twisted king block to consolidate the beach,the river regime can be effectively stabilized,the original beach morphology can be restored,the continuous scouring development of the rear ditches can be suppressed,and the impact of water intake facility construction on the waterway can be reduced,and the goal of stabilizing the water intake conditions during the operation period of the water intake head and ensuring water intake efficiency can also be achieved.