Abstract
The appearance of the offshore constructions will affect the hydrodynamic environment greatly. The direct effect is the change of hydrodynamic environment, which will affect the silt migration path and cause local scour. So a local refined calculation model of tidal distribution is developed in this paper to study the tidal current distribution and sediment scouring and deposition around the offshore constructions. Then an artificial island at Shengli Oil filed is taken for example. The developed model above is adopted to simulate the tidal distribution and local scouring change before and after the construction of the artificial island. The results of calculation show that excessive flow velocity appears near the construction, which cause sever local scour. And the calculation results can also provide technical support for the safety evaluation of the offshore constructions.
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