Print Email Facebook Twitter Hydraulic design criteria for rockfill closure of tidal gaps - vertical closure method Title Hydraulic design criteria for rockfill closure of tidal gaps - vertical closure method Author Anonymus, A. Corporate name Rijkswaterstaat Date 1985-07-01 Abstract During closure, the dumping of large stones, concrete cubes or other flow resistant elements into the gap, reduces its cross-section. At first, the total flow of water is basely reduced; consequently the flow velocity increases more or less proportionally with the decrease in cross-section, necessitating larger units of material in the later stages of closure. Furthermore the stability of the adjacent seabed, when it consists of erodab1e material, is endangered and there is a need for bottom protection to ensure a stable foundation to the closure dam. After the dam crest emerges above the water surface, the core can be filled up with finer materials, e.g. sand or gravel, to reduce the permeability. Finally, covering layers are applied to seal the slopes of the dam and to provide protection against wave attack. This report investigates the flow pattern over a vertical closure and the related requirements for stone sizes. Subject closure methodvertical closurerock closureIzbash method Classification TPN400310 To reference this document use: http://resolver.tudelft.nl/uuid:f7cca9c1-434f-438e-89be-2b95df53944a Publisher Deltares (WL) Source WL rapport M1741-IV Part of collection Hydraulic Engineering Reports Document type report Rights © Deltares Files PDF M1741-IV.pdf 4.4 MB Close viewer /islandora/object/uuid:f7cca9c1-434f-438e-89be-2b95df53944a/datastream/OBJ/view