Southern Dredging

Breakwaters Shoreline Protection

site_admin — Tue, 07 Aug 2018 13:52:29 +0000

Breakwaters Shoreline Protection

Breakwaters can be constructed with one end linked to the shore, in which case they are usually classified as sea walls; otherwise they are positioned offshore from as little as 100 m up to 300–600 m from the original shoreline. There are two main types of offshore breakwater, single and multiple; single as the name suggests means the breakwater consists of one unbroken barrier, which multiple breakwaters (in numbers anywhere from 2-20) are positioned with gaps in between (50–300 m). Length of gap is largely governed by the interacting wavelengths. Breakwaters may be either fixed or floating, and impermeable or permeable to allow sediment transfer shoreward of the structures, the choice depending tidal range and water depth. They usually consist of large pieces of rock (granite) weighing up to 16 tons each, or rubble-mound. Their design is influenced by the angle of wave approach and other environmental parameters. Breakwater construction can be either parallel or perpendicular to the coast, depending on the shoreline requiremen…… (Read More)

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Maintenance Dredging

site_admin — Tue, 07 Aug 2018 13:30:12 +0000

Maintenance Dredging involves the removal of unwanted silt, sand or sludge from existing waterways that are already dredged at some earlier point. It is usually somewhat shallow and is performed by a hydraulic cutterhead dredge and involves depths from 3′ to 30′ in a marina or cove, dock area, river, canal, pond, reservoir or similiar body of water. It can also include the removal of unwanted aquatic vegetation or toxins. It can also be necessary to improve navigation channels when the oceans tides and wave action have created sandbars and other sand or silt buildup preventing boats or ships entry due to shallow depths.

Southern Dredging & Marine, Inc. offers maintenance dredging in the service areas of Florida, Bahamas and Exumas, Caribbean and Central America. If a hyrdrographic survey is needed, we can supply the survey and help with the engineering methodology. Our dredges are equipped with GPS measuring and monitoring systems to keep track of the depths dredged as well as the amount of materials dredged.

We can also help you determine if the use of GeoTextile Tubes or Bags is necessary for your job. Using GeoTextile Tubes or Bags helps with the turbidity management as well as gives the client a supply of silt or sand to use in beach restoration or land creation.

Feel free to contact us to go over your marine project and learn more about the services offered by Southern Dredging & Marine, and how we can help improve your property. Call us at 706-654-0062 today.

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Marinas, Rivers & Lake Dredging

site_admin — Tue, 07 Aug 2018 12:44:28 +0000

Dredging marinas, rivers, canals, reservoirs to depths up to 40' is usually performed with a basket cutterhead "spud" dredge that enables the dredge to walk forward on the ocean or river bed. Although this dredge can also be used for maintenance, it can be used to dredge virgin ground such as creating a new marina or channel that previously did not exist. The size of the discharge hose and pump, along with the engine, helps determine the amount of silt, sand or sludge the dredge can pump to the holding cell or GeoTextile Tubes, and is usually calculated by the amount of cubic yards.

Maintenance dredges such as auger suction cutterhead dredge, a jet-filled dredge, or an amphibious dredge usually cannot efficiently cut virgin ground, and this is best left to either a basket cutterhead spud dredge or a barge loaded excavator, as that type of dredge will be quicker and more suited to dredging harder soils and rock.

Contact us for more information or to get a quote on your next project. If you already have engineering drawings, hydraulic surveys or feasibility studies, please upload a copy to us for a better understanding of your goals and the project requirements.

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