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Dredging is difficult, dirty, and often dangerous work. Whether you need a dredger to mine gold or keep waterways – big or small – clear for navigation, choosing the right dredger for the job especially important.
A Primer on Dredgers
Dredgers played a key role in some of the greatest engineering and construction projects ever undertaken, including the Panama Canal. The average small business owner won’t need a dredger made to handle Panama Canal-type work, but carefully evaluate the various types of dredgers for sale, and their performance capabilities, before making such a significant investment of capital.
Mechanical Specifications
When you start your search for a dredger, determine how much Power (Cutter, Pump, and Total, all measured in Kilowatts), Nominal Pump Capacity (measured in cubic yards per hour), and Digging Depths (measured in Feet and/or Meters).
Suction Dredger
Suction dredgers are used for the majority of dredging operations, including gold mining. The straightforward design of the suction dredger operates by sucking material through a massive tube, similar to a gigantic vacuum cleaner. Small suction dredgers are popular with small-operation gold miners because they’re relatively inexpensive, but often require state-issued special permits for use.
Cutter Suction Dredgers (CSD)
The suction tube of a cutter suction dredge (CSD), attached at the suction inlet, loosens earth and transports it to the suction mouth. A centrifugal pump sucks up the dredged soil and discharges it to a barge. Look for vendors who sell used dredgers; there’s a significant secondary market for these powerful machines, so it’s not unusual to find special deals.
Cutterhead Dredgers
When a project requires more digging force, look at a Cutterhead Dredge. These are designed to create more turbidity, improving cutting force over a larger surface area. The increased cutting force makes the cutterhead dredge suited to sand as well as shell dredging.
Auger Dredgers
Similar to cutter suction drudgers in function, Auger Dredgers use an auger flighting to shepherd sediment into a suction intake. Auger dredges are most often used on soft materials such as silt and sludge, and are especially useful for river maintenance applications. These dredgers will work as a sand dredger, too, but can be a less effective option than a cutterhead dredge.
Trailing Suction Hopper Dredger (TSHD)
The TSHD is known as the workhorse of the dredging world because of its wide application area, but its specialty is sand and silt. These self-propelled sea or inland ships are equipped with a hold (hopper) and a dredge installation that automatically loads and unloads. Dubai’s Palm Islands – an artificial archipelago being constructed in the Persian Gulf for residential and commercial use – are the product of trailing suction hopper dredgers.
Dredging up old memories is an expression that comes from the dredgers of days and decades past. Not only were the people who worked these jobs heroes of their time, but they were also heralded for the jobs that they did because the dredging job itself is so dangerous. Dredging means to excavate large areas of something, most often the case is that Dredgers are excavating dirt and other natural elements, paving the way so that construction workers can do their jobs. Additionally, the dredging done today is done a bit differently, but it is still just as dangerous.
If you want to find out about more information about how dredging is done, what dredging is used for, or about the people who make that job possible, then you are in the right place to find that information. Business.com is home to a wealth of valuable and resourceful information that can not only help you learn about these types of jobs, but can also point you in the direction of finding out about the people make the jobs and our bridges and roads possible. Click the links on the left and you could have your very own domain name today.