Hydraulic and earth engineering – Bank – shore – or bed protection – Wave or flow dissipation
Patent
1988-10-07
1989-06-20
Corbin, David H.
Hydraulic and earth engineering
Bank, shore, or bed protection
Wave or flow dissipation
405 30, E02B 306
Patent
active
048405167
ABSTRACT:
An artificial reef for inhibiting beach erosion is formed from a plurality of connected adjacent blocks, each having a base with inclined front and back walls connected by vertical side walls and a flat bottom surface. A plurality of rectangular vertical columns are spaced along an upper surface of the base and are sequentially stepped in height from the front and back walls to a maximum height adjacent a mid-portion of the base. A plurality of vertically spaced saw toothed wave forms extend along the base, in aligned pairs on opposite sides of the columns. A plurality of pairs of aligned triangular surfaces project from front and back walls of each column, spaced vertically along the columns in alignment with the saw toothed wave forms. The blocks are assembled in side by side relation, with each block alternately having downwardly extending trapezoidal prismatic projections or mating recesses. When assembled, the blocks form a plurality of interior intersecting passages extending in first and second perpendicular directions. The interior passages have a corrugated interior surface and serve to absorb wave energy from obliquely approaching waves and direct the water flow therefrom either perpendicular to or parallel with the beach line. This prevents erosion of the beach through latorial drift.
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Corbin David H.
Kearns Jerry T.
Olsen Arlen L.
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