摘要
根据实测资料对温州港深水航道海区水沙环境进行分析,针对工程区岸线不规则、地形复杂、岛屿众多和滩槽交错等特点建立基于不规则三角形网格考虑波浪作用的潮流泥沙数学模型。在对模型进行充分验证的基础上,研究深水航道一期工程实施后的潮流泥沙运动规律,分析流场特征和航道内横流,预测航道内泥沙年回淤以及极端天气条件下发生骤淤的可能性。主要结论有:航道内水流流态平顺且横流不大;年淤强介于0.0~0.62ma,年淤积量为177.3万m3;极端天气条件下,底部泥沙以浮泥形式出现,航道内水流流态平顺且动力条件较强,浮泥难以在航道中长期存留,但应注意其短期碍航。
The hydrology and sediment environments in the ocean area near the project are analyzed according to the measured data firstly.In view of the characteristics of irregular coastline,complex terrain,numerous islands of the sea area,a two-dimensional model of wave,tidal current and sediment transport is built and verified to study the tidal and sediment transport law after implementation of the first phase channel project,analyze the tidal current characteristics,cross flow in channel,annual deposition and possibility of sudden deposition under the extreme weather condition.The main conclusions are as follows.The current flow in the channel is smooth and the cross flow is not large;the annual siltation intensity ranges from 0.0 to 0.62 m a,and the annual siltation volume is 1.773 million m 3;under the extreme weather conditions,the bottom sediment is in the form of floating mud.The current flow in the channel is smooth and the dynamic conditions are strong.It is difficult for the floating mud to remain in the channel for a long time,but attention shall be paid to its short-term obstruction.
作者
李文丹
韩志远
李孟国
LI Wen-dan;HAN Zhi-yuan;LI Meng-guo(Tianjin Research Institute for Water Transport Engineering,M.O.T.,Tianjin 300456,China)
出处
《水运工程》
北大核心
2019年第7期115-121,共7页
Port & Waterway Engineering
关键词
潮流
泥沙
数学模型
数值模拟
温州港
深水航道
tidal current
sediment
mathematical model
numerical simulation
Wenzhou Port
deepwater channel
