Device for beach replenishment

Abstract

System consisting of a pierced box-type outer casing made of nets of natural and biodegradable materials which, positioned on eroded coastlines, allows the incident wave motion to pass through, though trapping the suspended and transported particles inside the box, favoring the replenishment of the coast. The outer box is filled with horizontal net sheets with holes of different dimensions, ie with the size of the holes in the sheets that decreases from top to bottom. The bottom is the lower part of the box, positioned on the shore line.

1 . Device to avoid the coast erosion, consisting of a pierced box made of natural and biodegradable materials such as, for example, jute or cotton. 
     
     
         2 . Device as in the previous claim, containing several sheets of nets made of natural and biodegradable materials. 
     
     
         3 . Device as in the previous claim, in which the net sheets contained in the box have holes of decreasing size from top to bottom. That is, the top sheets have larger holes than the bottom sheets.