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You are here : eLibrary : IAHR Asia Pacific Division Proceedings : 19th IAHR APD Congress, Hanoi 2014 : Session 1: ENVIRONMENTAL HYDRAULICS : SCOUR AND DEPOSITION AROUND SPUR DYKES WITH LONGITUDINAL DYKES
SCOUR AND DEPOSITION AROUND SPUR DYKES WITH LONGITUDINAL DYKES
Author : H. HAYASHIDA(1), Y. MUTO(2), T. TAMURA(3) & S. TAZOE(4)
Laboratory experiments regarding the design of spur dykes with longitudinal dykes were conducted in a straight flume with a movable bed. 3 types of the longitudinal dykes were considered, extending only upstream (LU-shape), only downstream (LD-shape) and toward both directions (T-shape), in addition to no longitudinal dyke (I-shape). 10 sets of spur dykes were installed only on one side of the flume, and 2 depth conditions were explored, i.e. non-submerged and submerged ones. Surface flow patterns and equilibrium bed configurations were measured. The results show that amount of deposition in the embayment fairly differs according to the shape and length of the longitudinal dykes. This sediment deposition also induces geometric diversity in the embayments. Among the tested types, LU-shape (only upstream) dykes captures sediments most effectively for both non-submerged and submerged cases.
File Size : 1,061,375 bytes
File Type : Microsoft Word Document
Chapter : IAHR Asia Pacific Division Proceedings
Category : 19th IAHR APD Congress, Hanoi 2014
Article : Session 1: ENVIRONMENTAL HYDRAULICS
Date Published : 10/03/2015
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