Revetment system for preventing bluff erosion

A method for preventing shoreline slope erosion due to wave and hydrostatic forces comprising:

• providing an elongate, grid-like frame structure of predetermined shape;
• excavating said slope to form an excavation of substantially complementary shape for receiving said frame structure;
• disposing a filter fabric liner to overlie the surface of the slope excavation so as to line said excavation beneath said frame structure, said filter fabric liner being sufficiently porous to allow water to pass therethrough while preventing the movement of the soil material of the slope therethrough;
• setting said frame structure into said slope excavation and over said filter fabric liner such that an upper surface portion of said frame structure is substantially continuous with the natural contour of the slope;
• filling the volume defined by said frame structure with an aggregate material of a size such that water may move relatively freely therethrough;
• such that said filter fabric liner and said aggregate material filling said frame structure substantially prevent the buildup of hydrostatic pressure therebehind by allowing the flow of water therethrough, while preventing the soil material of the slope from washing therethrough:
• and covering at least said upper surface portion of said frame structure with a mesh-like material.

A revetment system for preventing shoreline slope erosion due to wave or hydrostatic forces, said system comprising:

• an elongate three-dimensional frame structure;
• a mesh-like material covering over at least the upper surface portion of the periphery of said frame structure;
• said frame structure adapted to be set into the shoreline slope such that the upper mesh-like material-covered surface portion thereof is substantially continuous with the natural contour of the slope;
• a quantity of aggregate material substantially filling the volume defined within said frame structure, said aggregate material being of a size such that water may move relatively freely therethrough;
• and a filter fabric liner disposed beneath said frame structure, said filter fabric liner being sufficiently porous to allow water to pass therethrough while preventing the movement of solid soil material of the slope therethrough, such that said aggregate material confined by said frame and mesh material providing a porous wall structure which can withstand and dissipate the wave forces by permitting water to flow therethrough, and the filter fabric liner in conjunction with said aggregate material filling said frame structure substantially prevent the buildup of hydrostatic pressure behind said revetment system wall structure by allowing the flow of water therethrough while preventing the soil material of the slope from washing therethrough.