Hydraulic and earth engineering – Bank – shore – or bed protection – Wave or flow dissipation
Patent
1986-10-03
1987-12-01
Corbin, David H.
Hydraulic and earth engineering
Bank, shore, or bed protection
Wave or flow dissipation
405 24, 405 32, E02B 304
Patent
active
047100575
ABSTRACT:
Apparatus and a method for protecting beaches and shorelands from erosion caused by wave action. The apparatus consists of a system of plural interconnected compartments disposed under the water on the seabed in an array which extends generally parallel to the shoreline of the beach. Each compartment is formed by plural flexible wall portions comprising an open mesh, buoyant material. The wall portions are anchored to the seabed so that they extend in a generally vertical orientation. Anchoring means are provided to enable the wall portions to move towards the beach with incoming waves while precluding those wall portions from moving backwards substantially beyond the vertical orientation with backwash waves, whereupon sand or other particulate material suspended in the water is enabled to drop out of suspension within the compartments during the backwash waves. The compartments are formed by two groups of wall sections, one group comprising plural webs extending parallel to one another and generally parallel to the direction of the principle waves over the seabed and another group being formed of plural webs extending across and intersecting the other webs. The webs are joined together at their intersections. The anchoring means comprise plural tension strips, each of which is connected to a respective one of the webs of the first group at a location adjacent the beachward side of the system.
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