Author(s): F. B. Winston; R. J. Keller
Linked Author(s):
Keywords: Minimum energy loss structures; Design procedure; Sediment sweepout
Abstract: A method is developed for the design of minimum energy loss (MEL) structures for stream crossings. Such structures are characterised by smoothly transitioned inlet and outlet fans and a depressed invert. MEL structures can accumulate sediment in the depressed invert under conditions of low flow. It is essential that the sediment is swept out prior to the arrival of the peak flow. The design procedure includes a model for computing the sediment sweepout characteristics under an imposed inflow hydrograph. The procedure has been tested against experimental results from a physical model and excellent agreement is noted.
Year: 1999