Pipeline sand delivery system

The invention relates to a water conservancy machinery and particularly discloses a pipeline sand delivery system. The pipeline sand delivery system comprises a sand dredger, a silt concentrator and/or sand collection tank, a primary pressurizing pump station, a pipeline sand delivery pressure regulating tower and a secondary pressurizing pump station, wherein the silt concentrator and the sand collection tank are used alternatively or at the same time, water pumps used in the primary pressurizing pump station and the secondary pressurizing pump station can be vertical hydraulic inner-tube silt pumps or vertical hydraulic plunger silt pumps or both of the them. The pipeline sand delivery system can realize remote delivery of sand of Yellow River, collapse area caused by coal excavation in a coal area can be filled, and reclamation and cultivation restoring of the farmland are realized.