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In Situ State of Underwater Hydraulic Sand Fills

by J. H. A. Crooks, Golder Associates, Calgary, Alberta, Can,
S. B. Shinde, Golder Associates, Calgary, Alberta, Can,
K. Been, Golder Associates, Calgary, Alberta, Can,



Document Type: Proceeding Paper

Part of: Civil Engineering in the Arctic Offshore

Abstract:

An approach is described for quantifying the in situ state of hydraulically placed sand fills which are a significant element in the construction of artificial exploration islands in the Beaufort Sea. The approach is based on the state parameter concept which in turn forms the basis for interpreting CPT data. It is shown that the in situ state of sand fills is highly variable but definable in terms of general trends. The importance of factors such as material type and construction placement method is demonstrated. The approach is used to assess qualitatively the stability of four existing islands, two of which failed. Limitations associated with the state parameter approach to defining in situ state are discussed.

Subject Headings: Hydraulic fills | Sandy soils | Sand (hydraulic) | Offshore structures | Islands | Field tests | Parameters (statistics) | Beaufort Sea

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