Test Study Of Control Mechanism For Offshore Sediment Transport

The main aim of this thesis is to explore a new mode used to prevent quickly coast from eroding. This is one of key study content of "Sediment Movement Control Technology for the Exploitation Area of Coastal Oil Field" , "863" Program.On the basis of analysis and investigation, a tentative project dealt with the controlling method of sediments movement is presented. In the project natural energy is considered as the most of it. According to a series of model tests in lab and middle test in field, the mechanism about sediment incipient motion, transport and deposition in silt coast is studied. The effect of forced sediments to move through jamming by different device units and the ocean dynamical condition in which movement sediment transports to protection area along the designed route and then deposits in the area, and the necessary engineering measurements are explored. The contrasting analysis between the experimental results and numerical calculation data about sediment movement is carried out.According to the actual research process from the lab to the field, the phenomenon occurred in the test process has been described in this thesis by a lot of typical test data and graphics. The study indicates that the tentative project dealt with the controlling method of sediments movement is feasible.The system technologies, as comprise long array sediment jamming technology, seabed rough increasing and wave energy eliminating, sediment fixation technology through dams at tideland, have been realized basically based on the mechanism research. The study result show it gives out a scientific data used to quickly protect coastal oil fields.In addition, the integration and single technologies will be of wide application foreground for coast protection, sea-route dredging up, etc.