METHOD FOR LAYING A DRAINAGE SYSTEM UNDER A BEACH ON A COAST

摘要

In a method for laying a drainage system under a beach (2)on a coast in order to protect the coast against erosion, first pipe sections (7a) are placed in the beach parallel to the coastline and second pipe sections (7b) with water-permeable walls are placed at right angles thereto, in which the open ends (7c) of the pipe sections (7b) extend into rip (currents 4) that are present in the water. Moreover, several partitions (10) are placed behind each other in the rip current (4) in order to prevent the rip current from shifting along the coast so that the pipe sections (7b) will come to lie with their open ends (7c) outside the rip currents (4). Finally, the pipe sections (7b) are fastened flexibly to the partitions (10) so that they do not come to lie outside the rip currents (4) because of the current.