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In recent decades, the world's coasts due to various natural and man-made causes, the balance of its power destroyed, the coastline is constantly erodes the role of tidal waves frequently sharp decline in marsh surface elevation, revetments, beach sea embankment and coastal engineering building foundation was a strong erosion, destruction. Seriously affect the coastal areas of human activity and production. To this end, the strong erosion coast beach protection to promote silt engineering research is imperative. The submerged breakwater revetment project is a commonly used building, widely used in revetments, beach protection siltation, Wai land reclamation and diversion Offshore Engineering. On the one hand, it can be effective abatement into the embankment after wave, reducing the role of the wave forces on the buildings, improve the safety factor of the building; On the other hand, the water into the embankment after the space within the wave height decreases, sediment-laden capacity is reduced, there will be a part of the sediment laden water off the coast into the embankment after deposition down the beach face continued siltation. Less submerged breakwater at home and abroad, the research results are difficult to apply to actual engineering design, based on the fundamental role of the submerged breakwater the submerged breakwater wave dissipation and siltation performance, and strive to reveal the inherent law of has the practical significance of the research, and related engineering can learn. The submerged breakwater wave dissipation performance, by means of physical model tests to study the transmission characteristics of the submerged breakwater, select four structures as an object of study in the form of select the relative TiDing water depth as on the basis of the analysis of the impact of various factors on the the submerged breakwater transmission impact the most important influencing factors, comparative analysis of the transmission characteristics of the four structural forms, and on this basis, summarizes the empirical formula of the transmission coefficient of the calculation submerged breakwater; Levee accumulator discharge problem, the vast majority of projects adopted is the port gantry tidal concentration channel bleeder holes levee cross-section set program less storage and discharge of the submerged breakwater, and the embankment after the water level in the dams related to the submerged breakwater beach protection promote silt effects and potential dike structural stability, this article using the water balance relationship binding characteristics of the outer tides bit, through analysis, introduction of a certain approximate determination conditions, the establishment of different circumstances under the dam Tin water level changes analytical methods, this method may be the dams, the water level of the alternating change process simple simulation; the submerged breakwater siltation performance, the current domestic and international research also is relatively small, especially silty coastal siltation computing, there is no universally agreed formula, this article from the submerged breakwater transmission coefficient start, according to the characteristics of the coast with fine particles of sediment movement under wave action and sedimentation law, combined with previous research on the the Muddy Coast causeway siltation, summed up the characteristics of silty marine sediment silty Coast submerged breakwater engineering prediction method of analytical calculation of siltation thickness; Finally, combined with the natural conditions of the sea beach area of ??the Yellow River Delta, the use of this article by the theory and methods of beach protection and promote the victory Feiyantan oilfield the silt engineering submerged breakwater wave dissipation computational analysis and siltation, beach protection and promote the role of silt engineering to make a quantitative evaluation for the submerged breakwater.
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