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Reduction of Intake Flow Due to Ice Rubbling and Consolidation

by R. Peter Johnson, Arctec Alaska Inc, Anchorage, AK, USA,
Jack C. Cox, Arctec Alaska Inc, Anchorage, AK, USA,
J. L. Machemehl, Arctec Alaska Inc, Anchorage, AK, USA,



Document Type: Proceeding Paper

Part of: Water for Resource Development

Abstract:

Numerous seawater intakes have been designed for Arctic Coastal Waters. In these areas moving ice often causes rubbling and pile up of broken ice pieces against the shore. If this forms in front of the intake a constriction to the flow develops. Although initially porous, the rubble gradually consolidates with the voids between the ice pieces freezing solid. This pinches the flow off further until flow is totally lost. The limiting flow to an Arctic intake blocked by a grounded rubble field is analyzed.

Subject Headings: Water intakes | Ice | Sea water | Water flow | Sea ice | Riprap | Voids | Arctic

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