| Abstract | It is aimed to pool present-day knowledge on' the techniques, studies and practices in the design of main types of intake structures equipped with
preventive and/or curative measures of sediment exclusion. These measures include the proper location of an intake, approach channel, river training
works, regulation at headworks canal, sill level, settling basins, silting tanks, sediment excluders, sediment ejectors, various types of vanes, vortex tube, divide wall, sand screen; and comparison of their design considerations, operation maintenance and efficiencies. A number of respective prototype
examples are also cited with representative diagrams.
Finally divide wall, tunnel-type sediment excluders and ejectors, and settling basin are designed for the diversion canal at Nakhon Sawan, the Chao Phraya River, Thailand, as measures for sediment exclusion so that the canal run round the year. Their layouts are given and recommended for model
studies to test their efficiencies in sediment exclusion. |