Analysis of Deposition and Elongation of Estuary Channel Since Water and Sediment Regulation of Xiaolangdi Reservoir

摘要

According to analysis of estuary deposition and erosion recently, the estuary channel has been eroded, water lever of the same discharge decreased since water and Sediment regulation. But the erosion of the channel below Qing 6 section is unobvious. There are also some problems, tor example, silt transport power is insufficient, erosion and elongation rate is too fast, river position changes greatly. So the authour put forward some recommendations such as enforcing river dredging, carrying out Sediment roiling together with water and sediment regulation, perfecting river training works as soon as possible etc..