摘要:
A portable breakwater system for use in a body of water includes first and second support members adapted to be positioned on the floor of the body of water and a curtain attached between the first and second support members. The first and second support members allow the curtain to freely rise in response to a wave in the body of water so as to attenuate the wave. Each support member includes a base plate and a frame assembly extending upwardly from the base plate. The base plates can be anchored to the water floor with one or more weights. The frame assemblies include pivoting or telescoping sections that permit the curtain to rise in response to a wave. Alternatively, the curtain can be attached to pre-existing underwater structure, such as the support members of a dock located in the body of water. In this case, the curtain is attached to the support members via attachment sleeves that are slidingly mounted on the support members.
摘要:
A method and material for preventing erosion and maintaining playability of golf course sand bunkers. A geotextile liner is formed of two water-permeable layers. A first non-woven layer of randomly-aligned, synthetic fibers is configured and adapted to maintain sand in place within a sand bunker. A second backing layer formed of spunbond synthetic fiber is impervious to sand and configured and adapted to prevent downward migration of sand through the liner, while also preventing the upward migration of weeds, rocks and other contaminants that hinder the playability of the sand bunker. The backing layer also permits seams between adjacent sections of the liner to be joined by staples that penetrate the second layer but do not penetrate the native soil. Sections of the liner are laid within an unfilled sand bunker, and cut to fit the contours of the bunker as necessary. The liner is anchored to the bunker base using a plurality of sod staples, and seams between adjacent sections of the liner are joined using staples that are not sod staples and are configured and adapted to penetrate the backing layer of the liner but not penetrate soil. The staples used to join the seams between adjacent sections of the liner may be installed using a hand-held, pneumatic stapler.
摘要:
An apparatus and system for dissipating water wave energy and for shoreline control including a module with a generally hollow body, a pair of opposed flanges attached to adjacent corners of the body, a pair of axially aligned mounting apertures in the flanges for connecting the body to similar bodies for forming a wave energy dissipation system, and a recess disposed between the flanges. Each recess contains a plurality of boundary layer interrupting projections for substantially disrupting any laminar flow of water past the surface and creating turbulent flow.
摘要:
An improved device and method for mechanically installing erosion blankets on a ground surface. The device holds a roll of an erosion blanket and provides that the blanket unwind when the device is propelled forward. Upon unwinding, the device positions the blanket on the ground and pins the blanket in position using staples, stakes or the like. Preferred embodiments of the device provide for furrowing of the ground before installation of the blanket.
摘要:
The present invention describes an off-shore wave ramp for inducing early cresting of waves to prevent damage and erosion along a shoreline, consisting of at least one platform supported above the natural sea floor by support means firmly affixed to the sea floor, the platform being arranged according to a predetermined regular pattern such that the area of the covers between about 50 and 80 percent of the area of the seal floor under the platform and forming a false sea floor seawardly inclined between the high water level to a selected distance above the sea floor. The wave ramp platform is comprised of an array of a selected spaced-apart, unconnected, rigid, non-bouyant, stationary plate-shaped elements with a seaward inclination of the wave ramp is at a selected angle relative to the floor.
摘要:
An adjustably compliant porous groin and method for use in restoring an eroding shoreline. The compliant porous groin has a barrier suspended by flotation support within a sediment laden eroding water flow of the shoreline with the water flow passing through at least a portion of the barrier, and the bottom edge of the barrier retained proximate to the seabed. The barrier is compliant such that the water flow impacting the barrier is slowed whereby suspended sediment in the water flow accretes to renourish the shoreline.
摘要:
The present invention relates to a flow permeable port embankment, mainly constructed by multiple waste tires which are arranged in a longitudinal direction and a transverse direction. The port embankment includes multiple vertically arranged tires and multiple horizontally arranged tires that are combined with each other by fastening of cables. The horizontally arranged tires are poured with concrete. The port embankment can use a wave energy reduction device of central holes of the multiple vertically arranged tires, so that when a big wave or surge rushes into the port embankment through the central holes of the vertically arranged tires, the energy thereof is counteracted naturally and completely, so that the region in the port embankment is calm, thereby preventing ships in the port embankment from hitting each other.
摘要:
A breakwater assembly comprises an upper slab (15) supported on columns (14, 21) that extend upwardly from a lower slab (13). A solid back wall (17) depends from one edge of the upper slab (15) while a front wall (16) with holes (18) therein depends from the other edge to exchange sea water freely between inner sea and outer sea.
摘要:
An erosion control device is a panel formed of spaced horizontal and spaced vertical rods joined together to create a frame upon which is mounted a sheet of silt fencing material. A plurality of such panels may be rotatably joined together to form different configurations of erosion control fencing. The panels are reusable and the silt fencing material may be replaced thereon. The silt fencing material may be used to form a pocket for sand, thus forming a sandbag at the base of the panel for controlling water flow. The panel may have affixed thereto at the base a narrow metallic strip for cutting into the ground as the panel is forced downward thereon.
摘要:
In the embodiments described in the specification an artificial reef is assembled from a plurality of superposed layers of modules having similarly shaped projections and recesses located at predetermined specific locations on top and bottom surfaces and having a continuous through hole extending through each module. The projections of modules in one layer are received in recesses of modules in an adjacent layer so that the through holes of the modules in adjacent layers are vertically aligned and continuous columns of concrete formed in the vertically aligned through holes unite the modules to provide a unified artificial reef.