| 摘要 |
A marine dredging device comprised of scoop buckets pivotally connected to a reciprocating mechanism that extrudes soil into a receiver chamber and thence to upwardly extending soil transport tubes. Powered helices in the transport tubes serve to propel soil upwards to a discharge chute. Deployable silt curtains serve to close off the aperture between the scoop buckets and prevent the escape of sediments.
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