The present invention provides a low-energy coastal beach restoration method, comprising: constructing a convex beach berm, determining an aspect ratio of the beach berm edge, determining a beach face slope, performing sand replenishment, determining the dredging zone and dredging depth, and determining the steps of building a sediment groin. The present invention utilizes the feature of the convergence effect of the wave energy on the headland, artificially constructs a convex headland shaped beach berm, and determines the required beach face range and slope according to the convex beach berm edge. During beach restoration, dredging around the beach face, while reducing mud sources and increasing the nearshore water depth, it also builds a convex nearshore terrain, which effectively increases the wave energy at the restoration site and improves the coast muddy situation of low-energy coasts.

A wave generating system is provided. The system includes an enclosure having a base and plurality of sidewalls extending orthogonally upward from edges thereon, wherein a plurality of pistons are disposed over the surface area of the base therein. A covering layer of a waterproof and flexible construction is pivotally affixed to a top end of the plurality of pistons and attached to the plurality of sidewalls. The plurality of pistons is operably connected to a circuit board disposed within a control panel via a grid connection and programmed to create patterns and contours in the covering layer via the plurality of pistons. The patterns of ocean floor conditions ideal for surfing, as well as other geometric patterns, may be programmed and operated using a display screen or remote control.

The present invention relates to an erosion control apparatus and methods of using and installing the apparatus. The apparatus is constructed to prevent erosion of soil during typical weather or tidal conditions and adverse weather events. The apparatus can include a plurality of anchored rolls and soil lifts operative to stabilize the shoreline.

A method for constructing a seawall section includes coupling an end of a substantially-waterproof barrier member to a footing. A concrete form is mounted to the footing such that a top end of the form is higher than an exposed upper surface of the footing. The concrete form defines at least part of a fill volume. Another end of the barrier member is coupled to the concrete form such that the barrier member extends over a side of the concrete form opposite the fill volume. Concrete is then poured into the fill volume and cured to form the seawall section. Prior to the curing, a body of water at the footing may be higher than the upper surface of the footing. However, the barrier member prevents water from entering the fill volume through the concrete form.

The present invention discloses an ecological seawall water close side embankment slope drainage structure and a construction method thereof. The ecological seawall water close side embankment slope drainage structure includes a seawall, and further includes a wave dissipation ridge and water collecting wells, wherein the wave dissipation ridge is disposed at an upper side of the seawall, a drainage blind ditch is formed in an upper surface of the seawall, and the drainage blind ditch is matched with the wave dissipation ridge; the water collecting wells are distributed at a lower side of the drainage blind ditch at equal intervals, and lower end portions of the water collecting wells communicate with drainage concealed pipes; and pipe seats are disposed at a lower end portion of an inclined plane of the seawall, lower end portions of the drainage concealed pipes are fixedly connected onto the pipe seats, and flap valves are rotationally connected to lower end surfaces of the drainage concealed pipes. The present invention not only can reduce the erosion degree of sea waves to the seawall, but also can collect seawater going over the wave dissipation ridge and discharge the collected seawater into the sea again.

A multifunctional floating breakwater includes: a plank platform, a first buoy, a second buoy, a first wave baffle, a second wave baffle, a first arc breast wall, a second arc breast wall, upper inclined supports, lower inclined supports and a net cage. The multifunctional floating breakwater integrates a floating breakwater and a wave-energy power generation device, which can not only maintain good stability of the water surface in a harbor, but also generate electric energy, and allow for aquaculture and other activities as well, and has advantages of being movable and not limited by water depth and geology. In addition, the invention has a simple structure, easy production and maintenance, no pollution to the marine environment and therefore wide application prospects.

A fixed permeable breakwater which also serves as a wave power generating device is provided and includes a structure, a structure fixing device and a wave-activated generator set, the structure is connected with seabed through the structure fixing device, holes are arranged on an outer side of upper arc vertical walls of the structure, and spiral vane sets are placed in the holes; a spiral-gear generator is installed on the horizontal bearing plate, and waves push the spiral vane sets to rotate, and then push the spiral-gear generator to generate electricity. The breakwater can be applied to sea areas with deep water, large waves and complex terrain, while reducing the influence of waves and providing a stable water environment for the surrounding sea areas, it has good wave-absorbing performance, convert wave energy into electric energy, and effectively solve the power supply problem of port areas or island residents.

A device for damping hydrosound in liquid having a frequency range emitted from a sound-emitting body in the liquid includes: a plurality of individual gas volumes distributed in the liquid in an area of the sound-emitting body and at a distance from each other, each of the individual gas volumes being operable to reduce the hydrosound through resonant oscillations; and at least one mass body disposed in the liquid, the individual gas volumes being connected to the at least one mass body so as to prevent the individual gas volumes from rising up in the liquid.

A wave attenuator system for protecting a floating dock or other structure from incoming wake created by wind or vessel is disclosed herein, in various aspects. The wave attenuator system may include a substantially rectangular curtain made of a water-impermeable flexible material, in various aspects. The curtain top edge may be secured along the length of at least one of the sides of a dock, in various aspects. The curtain bottom edge may be suspended in a body of water a predetermined distance below the water surface, in various aspects. The bottom edge may include a weighted material to maintain the curtain in a substantially vertical orientation, in various aspects. The wave attenuator system is operable to redirect waves impacting the curtain downward to reduce wave action against the dock or other structure, in various aspects.

An erosion-preventing laminate mat may include a first layer of slivers of a natural material, a second layer of slivers of a synthetic material, and, in embodiments, a third layer of an open mesh. A system for utilizing the erosion-preventing laminate may include a movable frame having an upper surface shaped to pass beneath a substantially flat sheet of tied block mat, the frame including a spindle below the upper surface for supporting a roll of the first mat, the first mat including the first layer of slivers of a natural material, the second layer of slivers of a synthetic material, and the third layer of an open mesh. In embodiments, a system for forming the mat includes a movable frame shaped to pass beneath a substantially flat sheet of the tied block mat, and including a spindle below the upper surface for supporting a roll of the first mat.