小郭巨渔港工程防波堤平面布置方案

波浪是渔港建设中最重要的水动力因素,由于外海风浪作用强烈,影响港内渔船泊稳,需修建防波堤挡潮抗浪。从波浪角度研究防波堤平面布置,首先分析了舟山市六横岛小郭巨渔港工程的建设条件,确定防浪掩护控制标准,并提出防波堤直线形、折线形布置的8个平面布置方案。以满足渔船有效泊稳面积为准,采用MIKE21 BW模块计算在50 a一遇波浪与水位组合条件下堤后波高分布及防浪掩护效果,对8个方案进行研究,基于其中相对较优方案,进行了2个方案的优化。最终确定某渔港防波堤平面布置最优方案为:防波堤总长350 m、折堤夹角132°、直线段长122 m、折线段长228 m。

Plane arrangement scheme of breakwater for Xiaoguoju Fishing Port project

Wave is the most important hydrodynamic factor in the construction of fishing harbors.Owing to the strong influence of offshore wind,it is necessary to build breakwater project.In this paper,the layout of breakwater is studied from the perspective of wave.Based on the analysis of the construction conditions of the Xiaoguoju Fishing Port,the paper discusses the standard of the wave protection and puts forward eight linear or folding layout schemes of the breakwater.In order to satisfy the effective berth area of the fishing boat,the MIKE21 BW module is used to calculate the wave height distribution and wave protection effect of the dam after the wave and water level combination under the condition of 50-year return period wave and water,and the eight schemes are studied.Based on the relative optimal scheme,two schemes are optimized.Ultimately we determine the optimal solution for a fishing port breakwater layout:breakwater total length is 350 m,folding dike angle is 132°,linear segment length is 122 m,and line length is 228 m.