Reservoir area pipe sand-discharging system

The utility model relates to a reservoir area pipeline sediment ejection system which adopts the reservoir natural water head as the power resource, lays pipelines in the reservoir water near the dam section and ejects the sediment in front of the dam out of the reservoir. The utility model comprises a reservoir main pipeline going through the dam or the left and right bands mountain and laid on the bottom of the reservoir. Wherein, a branch pipeline is connected on the main pipeline; a mud suction head is installed on the head of the branch pipeline; a gate valve and a mixing blade are installed on the mud suction head; a water surface tractor tug of the reservoir is connected on the head of the branch pipeline through a steel cable and drags the branch pipeline and the mud suction head to move through the tractor tug. The utility model has the advantages of high concentration of sediment ejection, long service and low energy consumption.