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Pioneering Developments in Arctic Dredging

by Craig C. LaVielle, Rittenhouse-Zeman & Associates, Inc, Bellevue, WA,
Walter W. Burke, Rittenhouse-Zeman & Associates, Inc, Bellevue, WA,
Frank W. Pita, Rittenhouse-Zeman & Associates, Inc, Bellevue, WA,



Document Type: Proceeding Paper

Part of: Civil Engineering in the Arctic Offshore

Abstract:

Arctic dredging techniques which have been recently implemented in the Arctic include: the successful hydraulic suction dredging of frozen sands and gravels, the first direct placement of dredged fills atop ice-rich permafrost, and the direct placement of hydraulic dredged fill in Arctic waters. As three project case studies demonstrate, hydraulic suction dredges have a large potential role to play in future offshore development in the Arctic. Hydraulic dredges can supply the large quantities of natural borrow material needed to construct embankments, causeways and artificial islands. They can accomplish this using the locally available borrow materials. Some frozen deposits or materials that would normally be considered too silty or frost susceptible to feasibly mine can often be dredged, thawed, washed and delivered to the project site in one continuous operation using a single primary machine.

Subject Headings: Dredged materials | Offshore construction | Construction materials | Construction equipment | Construction sites | Cold region construction | Case studies | Arctic

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