港口工程影响下莱州湾西南侧海域水动力演化特征

发布时间：2019-07-10 08:45

【摘要】：河流输沙、水深地形演变、大型海洋工程的建设均会对海洋水动力产生明显影响。本文基于MIKE21数值模型,对不同时期水深岸线条件下莱州湾西南侧海域的水动力演变特征及潍坊港建设对水动力的影响进行研究。结果表明,1984~2007年,黄河现行河口东南侧高流速区位置向SE向移动,莱州湾湾口及西南侧海域流速增大,增大幅度在10 cm/s左右。潍坊港10 km引堤工程的建设导致引堤端头处流速增大10~20 cm/s,引堤两侧流速减小15~20 cm/s,流向偏转量在10°~40°;潍坊港扩建工程的建设导致防波堤端头处流速增大5~20 cm/s,两侧海域流速减小5~20 cm/s,流向偏转5°~20°。黄河口沙嘴的形成对其南侧海域形成有效掩护,而潍坊港工程的建设对其两侧海域起到一定的掩护作用,导致该海域有效波高显著减小,水动力强度减弱。
[Abstract]:The river sediment transport, the evolution of water depth topography and the construction of large-scale marine engineering will have obvious influence on the marine hydrodynamic force. Based on MIKE21 numerical model, the hydrodynamic evolution characteristics of the southwest side of Laizhou Bay in different periods and the influence of Weifang port construction on hydrodynamic force are studied in this paper. The results show that from 1984 to 2007, the position of the high velocity area on the southeast side of the current estuary of the Yellow River moves towards SE, and the velocity in the mouth of Laizhou Bay and the southwest side increases by about 10 cm/s. The construction of Weifang Port 10 km diversion project leads to the increase of the velocity at the end of the embankment by 10 鈮，

本文编号：2512487