潍坊港中港区3.5万t级航道和防波挡沙堤的延伸方案

潍坊港地处莱州湾底部的粉砂质海岸，岸滩宽浅、泥沙运动活跃，在极端恶劣天气条件下，岸滩泥沙会大量悬浮，容易在航道内形成骤淤。中港区3．5万t级航道不仅需在现有1．0万t级航道基础上加宽、浚深和延长，其向外海延伸的航段已超出现有防波挡沙堤的掩护范围，防波挡沙堤需相应延伸以缓解大风天的航道泥沙骤淤，同时要辅以疏浚维护才能保持航道足够的通航水深。

Auxiliary Sand Breakwater ]Extension Plan of 35 000 DWT Channel Project at Central Harbor of Weifang Port

Weifang Port is built on silt-sandy beach at the bottom of Laizhou Bay and is characterized by shallow wide beach and active sediment movement. Under extremely severe weather, a large amount of sediment is suspended, which may cause sudden sihation easily in the channel. In the construction of 35 000 DWT channel project at central harbor of Weifang Port, the existing lengthened. Since the section of channel extended to 10 000 DWT channel will be widened and dredged deeper and ocean isn＇t shielded, existing sand breakwater should be extended correspondingly to weaken sudden siltation of the channel under gale. In addition, the channel must be dredged and maintained periodically so as to ensure navigable water depth.