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The cutter suction dredger became the workhorse of the dredging industry in America, as did the bucket dredger in Europe at that time. 3.1.3. Working method After the ladder of the cutter suction dredger has been lowered under water, the dredge pump(s) started and the cutter head set in motion. The ladder is then moved down until it

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A grab dredge Dredging is an excavation activity usually carried out underwater, in shallow seas or freshwater areas with the purpose of gathering up bottom sediments and widening as in the Erie Canal. This technique is often used to keep waterways navigable and creates an anti sludge pathway for boats. It is also used as a way to replenish sand on some public beaches, where sand has been lost ...

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Multi Application of Economical and practical cutter suction dredger price 1. Dredging is an exvation activity in which materials are recovered from beneath the water's surface.The purpose is generally to gather bottom sediment and either dispose is at a different location or use these sediments in various products,e.g.sand and gravel is used in concrete mixtures.There are many uses for ...

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Land reclamation: dredging to mine sand, clay or rock from the seabed and using it to construct new land elsewhere. This is typically performed by a cutter-suction dredge or trailing suction hopper dredge. The material may also be used for flood or erosion control.

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The term "bucket dredge" can have different meanings. In Europe, a common type of bucket dredge is the bucket ladder (), which excavates the bottom by a chain of buckets that moves around a large pivoting ladder, all in the vertical plane.Material brought to the surface by the buckets is dumped on a chute and falls into hopper barges brought alongside.

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Repeated failures in attempts to work gold-bearing gravels by means of suction-dredges have created the impression that this method is impracticable. The suction-dredges have failed from three special causes: excessive wear and frequent breakage of pump-shell, runners and liners; inability to dredge compact gravel which would not readily move towards the intake; and, most important of all ...

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