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首页> 外文期刊>Journal of Waterway, Port, Coastal and Ocean Engineering >Fortescue Inlet: Offshore Deposition Basins for Navigation Channel Management in Small Craft Inlets
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Fortescue Inlet: Offshore Deposition Basins for Navigation Channel Management in Small Craft Inlets

机译：Fortescue Inlet：用于小型船只入口航道管理的海上沉积池

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摘要

A comprehensive case study of the coastal processes for Fortescue Inlet (New Jersey, USA) is presented with the objective of minimizing maintenance dredging of the navigational channel. This study compares the effectiveness of both traditional sedimentation control structures and modified dredging templates, including construction of a new jetty, modification of the length and orientation of an existing jetty, and the use of upland and offshore deposition basins. The alternatives were analyzed using Deflt3D Flexible Mesh. The results indicate that sediment transport near Fortescue Inlet is dominated by wave action with pronounced seasonal variations in wave direction. The site exhibits relatively shallow depths above the depth of closure and pronounced offshore bars. Consequently, much of the sediment transport occurs well offshore (approximately 300 m offshore) and beyond the existing jetty. The results indicate that structural modifications (i.e., relocation or lengthening) of the existing jetty do not improve the sedimentation rate within the channel. Instead, use of offshore deposition basins delivers the most promising improvement, with potential cost savings over 10 over existing strategies.
机译：本文对Fortescue Inlet（美国新泽西州）的沿海过程进行了全面的案例研究，目的是尽量减少航道的维护性疏浚。本研究比较了传统沉积控制结构和改良疏浚模板的有效性，包括建造新码头、修改现有码头的长度和方向以及使用高地和近海沉积盆地。使用Deflt3D柔性网格分析备选方案。结果表明：Fortescue Inlet附近的沉积物输运以波浪作用为主，波浪方向具有明显的季节性变化。该地点的深度相对较浅，高于封闭深度和明显的近海酒吧。因此，大部分沉积物输送发生在近海（离岸约300米）和现有码头之外。结果表明，对现有码头进行结构改造（即搬迁或加长）并不能提高河道内的沉降速率。相反，使用海上沉积盆地提供了最有希望的改进，与现有策略相比，潜在成本节省了10%以上。

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