Study on the Deposition Reduction Effect of the Sediment–Sluice Tunnel in Zengwen Reservoir

Reservoirs are a crucial part of the human water supply system. The effectiveness and service life reservoir is decided mainly by its storage capacity, as such, preventing capacity loss high interest worldwide. Due to climate change in recent years, precipitation types have changed, heavy rainfall events become more severe frequent. Rainfall causes soil erosion slope lands transports large amounts sediment downstream, forming deposition. This fall rapidly decreases life. Sediment–Sluice Tunnel can reduce rapid deposition reservoirs is, thus, widely employed. By simulating transportation reservoirs, reduction after building be evaluated. study used Physiographic Soil Erosion–Deposition (PSED) model simulate flow discharge suspended flowing into Zengwen then depth-averaged two-dimensional bed evolution hydrological process. Simulation results showed that effectively reduced transported closer spillway gate. distribution with built beneficial deployment other dredging works.