Stan’s can work alongside the large hydraulic dredges. Too Tight for Typical Dredging Machinery?įor waterways that are too tight for the typical marine machinery and out of reach for dredging, Stan’s Airboat and Marsh Excavator Service amphibious fleet of equipment can handle shallow water operations. It supplies the flow to move material along the pipeline to the site of its disposal. The dredge pump is responsible for creating the necessary vacuum needed to successfully suck in material from the bottom of a body of water. But the core of a hydraulic dredge is the dredge pump. There are a variety of hydraulic dredges to fit a variety of jobs, like the cutter suction dredge, the chain ladder dredge, and the hopper dredge, to name a few. An open harbor would require more suction, while still water or parts of the Louisiana bayou, could get by with a low-horsepower hydraulic dredge. These dredges have different hydraulic ratings that are made to work in specific environments. What is a Hydraulic Dredge?Ī hydraulic dredge is a powerful floating machine that pumps a materials, like sediment and water, through floating pipes to be released on shore, or on board, where they may be filtered through for oysters.
These buckets are attached to a chain that mechanically digs up and moves out sediment. A mechanical pair of arms lifts heavy loads, and a large attached bucket digs down into the underwater surface.Ī grab or clamshell dredge takes advantage of a set of buckets located at the end of its arms to take out sediment, while a bucket-line dredge uses a series of buckets. Mechanical dredges, like the backhoe dredger (BHD) (basically a pontoon equipped with a hydraulic excavator), are much like the land-based backhoe or excavator.
Some dredges are even used to help restore sand that has disappeared due to the effects of erosion. They also keep harbors, marinas, ports, and canals clean and free of waste. We see them used in construction projects here in Louisiana. Stan’s Bobcat 337 Mini-Excavator/Dredger in action What are Mechanical Dredges?ĭredges can move just about any kind of material you can think of. Hydraulic dredges, on the other hand, suck up this mixture of water and sediment, called slurry, and then move it to another area by a pipeline. Mechanical dredges dig or take materials from the bottom of a body of water or its banks via a clamshell or a bucket. Both of these dredges serve a purpose, but the hydraulic dredge, as you will see, is less damaging to the Louisiana bayou. In the business of wetlands excavation and dredging, there are two main types of dredges: mechanical and hydraulic.
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