围海工程对邻近港区泥沙回淤的影响研究——以漳州港招商局中银码头区为例

Effect of coastal reclamation on siltation in nearby harbours--Zhongyin Dock of Zhangzhou Port taken as an example

针对港区附近围海造地造成的港区泥沙回淤量增大问题,以漳州港招商局中银码头区为例,全面分析了漳州港海域的地形地貌、水动力特征、泥沙特性和岸滩自然演变。根据工程建设前后地形变化,结合岸线回填量和九龙江输沙资料,分析了围海造地对岸滩演变及港区码头回淤的影响。研究表明,围海工程实施后,邻近港区的泥沙回淤由自然回淤、滩地抬高和回填引起的浑水回淤三部分组成。当围海工程结束,新岸滩调整达平衡后,泊位及港池的回淤将逐渐降至正常自然回淤强度。

Based on the accretion of sediment in harbor areas because of coastal reclamation nearby, the authors analyze the landform,hydrodynamic factors,sediment and coastal evolution in Zhangzhou Port. According to the topographic varieties before and after construction, the amount of the coastal backfill and the sediment transport data of the Jiulongjiang River are studied, and the influence on coastal evolution and siltation in the harbour is analyzed . The research shows after the coastal reclamation, the sediment deposition in the nearby harbor is due to natural silt deposition, beach accretion and muddy current caused by coastal backfill. When the coastal reclamation is finished, the new coast will reach a new balance gradually, and the deposition in the dock will also return to the natural level gradually.