Hydrodynamic stabilisation sysem against coastal erosion

摘要

A method of combatting coastal erosion comprises the installation of an aeration system into the swash zone of the beach to compensate for low sediment porosity in beach profiles composed of fine sand. This reduces the capillary effect within the beachface to improve the horizontal and vertical flow through the beachface to promote uprush sediment transport and entrapment. The aeration system comprises a number of spaced vertical filter membrane tubes 4 buried in the beach, interconnected by a pipework system 3 leading to a vertically mounted aeration pipe 1 located at the top of the beach. The system is a passive beach stabilisation system regulated by the natural hydraulic forces generated by waves and tides, promoting the conditions for creation of a balanced beach profile and sustainable equilibrium profile.