Marina Dredging– maintaining the depth of a marina, whether private or public, is vital to both marina owners and the customers they serve. The dredged material is repurposed as fill material forming new land along coastal waterways or inland water bodies, such as swamps. Land Reclamation – the process consists of dredging sand, clay, or rock from offshore or inland lakes, ponds, and quarries. Lake Dredging – In both natural and man-made lakes eroding sediment, silt accumulation, and algae blooms can gradually build up causing both depth and water quality issues. Lake dredging helps to maintain a healthy environment for both aquatic life and recreational activities. Hydraulic dredging– a floating barge type machine known as a cutter suction dredge used to remove underwater materials and transfer those sediments mixed with water (referred to as a slurry) through a pressurized pipeline to a deposit location. After the channel has been dredged, boats can navigate safely. Sand accumulation can completely block channels from boating traffic. Harbor/Inlet Dredging – Ellicott Dragon® dredges are useful in clearing inlets and harbors. Dredging these channels allows water to circulate in and out of these inland sites, bringing in nutrients and flushing out waste. The natural flow of sediments and industrial runoff can often choke off channels that feed fresh water to inland wetlands or ponds. Dredges are often used as a primary tool for rebuilding beaches.Įnvironmental Remediation – a means of dredging that is beneficial to both recreational users and natural wildlife habitats. Beaches that have been restored by dredging are designed to protect local communities from future storm damage and to preserve recreational beach space. These units can increase dredge efficiency when excavating compacted material and during heavy minerals recovery.īeach Restoration – the act of replenishing the sand loss that occurs naturally over time from tidal cycles, currents, waves, and inclement weather. Wheel Dragon™ Bucketwheel Dredge – Ellicott’s family of dredges equipped with a dual wheel bucketwheel excavator and an optional spud carriage system for heavy-duty work. Super-Dragon™ Dredge – Ellicott’s trademark design for 24” (600 mm) and larger standardized CSDs. Unlike conventional CSDs that require swinging of the entire dredge hull, the dredge hull is fixed while the ladder swings left and right allowing the cutterhead to reach its desired cut. Swinging Dragon® Dredge – a trademark designation for Ellicott’s swinging ladder dredge that advances on spuds, requires no cables, and is ideal for dredging narrow waterways and recreational areas. Dredge sizes are always expressed in terms of inside diameter of the discharge pipe.Įlectric Dredges – a substitute to diesel engines, dredges can be electrically powered from shore and are beneficial for long-term single location projects. The soil material then passes through the dredge pump and is discharged through a pipeline aft of the dredge.ĭragon ® Model Dredge – a trademark designation for Ellicott’s exclusive line of patented, portable hydraulic pipeline cutterhead dredges, referred to as CSDs, which range in size from 10” (250 mm) to 20″ (500 mm). CSD cutterheads are designed to break up soil which is immediately vacuumed by the dredge pump through a suction pipe. mining, environmental remediation, inland waterway, and coastal restoration projects. Also referred to as “Dismountable Dredges”, CSDs are ideal for multiple dredging applications, e.g. Tilting spuds can be added as an option, allowing the dredge to pass under busy overpasses and continue operations while working in a waterway with many bridges.Ĭutter Suction Dredge (CSD) – a dredge built in modular sections and easily trucked to port and/or destination where reassembled. This dredge features an extra deep and wide hull for added freeboard and stability. Coastal Dragon ® Dredge – an Ellicott cutterhead dredge is designed for working in coastal environments.
0 Comments
Leave a Reply. |