Jz9-3 Oil Field Building Local Basal Erosion Model Test

The artificial island is a kind of platform used in production in the offshore oil field in recent years. In this paper, a physical model experiment was carried out to study the serious scour around the caisson structure bottom under the action of waves, for 5 separated and grouped artificial islands with caisson structure supported by the stake base in JZ9-3 oil field.In the experiment, two wave cases with occurrence period 1 year and five year were adopted. Wave incident angles are 0° , 45° , 90° and 135° . Experimental data of scouring around caisson (s) and its (their) surrounding area is obtained. Through the analysis of the data information for the scour pattern, scope and degree of scouring depth for artificial island. Based on the analysis results, structure safety can be evaluated. Results and conclusions of this study have provided the foundation for the engineering design.