Suction dredgers encompass various types, including cutter suction dredgers, plain suction dredgers, and trailing suction hopper dredgers. Their fundamental operating principle involves using high-pressure water jets to agitate the sediment, followed by the use of a centrifugal slurry pump to extract the silt from the riverbed; the slurry enters the pump through the suction pipe and is discharged via the discharge pipe, driven by the centrifugal force generated by the pump's rotation. They can be categorized by propulsion method into self-propelled and non-self-propelled types.
Key dredging components include the cutter head, slurry pump, spud system, and discharge piping. Marine diesel engines serve as a primary power source.
During operation, dynamic actions-such as the rotation of the cutter head-are the primary causes of sediment release and increased turbidity.
Specific types also include trailing suction hopper dredgers, cutter suction dredgers, and split-hull suction dredgers.
The operational range is limited by the length of the equipped discharge piping.
