茅尾海航道开发潮流物理模型试验研究

发布时间：2018-06-10 08:09

本文选题：茅尾海 + 航道　；参考：《水运工程》2017年12期

【摘要】：茅尾海浅滩位于河流出口与潮水相互作用的区域,航道开发面临特殊的水流、泥沙问题。借助潮流物理模型试验,模拟整个茅尾海海域潮流情况,对开发航道方案流态、潮流场变化进行模型试验对比分析,对航道泥沙淤积问题进行计算分析。试验及分析结果表明:3个方案中,瓦泾江出口航道挖深最大,航道水流增加最大,淤积强度也最大,不利于航道维护;大榄江航道方案B利用深槽,挖深较小,水流变化也不大,但航道最大横流最大,不利于船舶航行安全。鉴于在河流出口与潮水作用浅滩开挖航道将面临落潮归槽水流影响、局部流速及淤积量增加较大、航道拐弯处横流太大影响船舶安全等问题,航道开发应尽量利用横流较小的深槽,可适当进行开挖。
[Abstract]:Maowihai shoal is located in the area where the river outlet interacts with the tidal water, and the channel development is faced with special problems of water flow and sediment. With the help of tidal current physical model test, the tidal current situation of the whole Maowei sea area is simulated, the flow state and tidal current field variation of the development channel scheme are compared and analyzed by model test, and the sediment deposition problem in the waterway is calculated and analyzed. The results of test and analysis show that: among the three schemes, the outlet channel of Wagingjiang River is excavated the most, the flow of channel increases the most, and the siltation intensity is the largest, which is not conducive to the maintenance of waterway, and the scheme B of Dalianjiang River makes use of deep channel to dig deep less, The change of water flow is also small, but the maximum cross current of the channel is the largest, which is not conducive to the safety of ship navigation. In view of the effect of river outlet and tide on the channel excavation in shallow beach, there will be some problems such as falling tide and returning channel flow, increasing local velocity and deposition, and too much crossflow around the channel, which will affect the safety of ship, etc. The channel development should make use of the deep trench with small cross flow as far as possible and can be excavated properly.
【作者单位】：南京水利科学研究院港口航道泥沙工程交通行业重点实验室;
【分类号】：U612

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