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Dredging

By Rick Wilmot C/E

Port Engineer

Clamshell Division Weeks Marine

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Topics of Discussion History of dredging Modern dredging Why we dredge Training

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History

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Designs By Leonardo Da Vinci

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Erie Canal

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Panama Canal

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Modern Dredging

Excavation Transportation Disposal or end-use of spoils Support equipment Training

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Excavation

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Mechanical Excavation

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Mechanical Dredges

Clamshell dredge Backhoe dredge Bucket ladder dredge Dipper dredge Dragline

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Clamshell Bucket Dredge

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Backhoe Dredge

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Bucketladder Dredge

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Dipper Dredge

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Hydraulic Excavation

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Hydraulic Dredges

Cutter suction Dustpan Plain suction Water injection dredge Hopper dredge

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Cutter Suction Dredge

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Water Injection Dredge

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Dustpan Dredge

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Trailing Arm Hopper Dredges

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Transportation

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Barge or Pipeline

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Disposal of Spoils

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Barge Unloader

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Support Equipment

Drill rig Survey boats Stifflegs Drag barges Boosters

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Why Do We Dredge ?

Channel deepening and maintenance Reclamation of land Beach nourishment and restoration Mining for aggregates and minerals

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Maintenance

Reclamation and Use

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Beachbuilding

Aggregate Mining

Beachbuilding and Mining

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Training

Hopper personnel are Coast Guard

licensed DSMP training On The Job Union Schools

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Survey