论文部分内容阅读
本文提出了一种适合于计算平直砂质海岸上岸线变形的数值模型。与过去的模型相比其不同点是本模型考虑了由于岸线变形后,岸线走向的改变对波浪折射的影响。作为一个例子对努港突堤上游的淤积年限进行了计算,其结果与有关的物理模型结果颇为接近。对于突堤下游的冲刷过程的计算,考虑了由于沿岸波高变化对沿岸输砂率的影响。这个模型可用于估计砂质海岸上海岸工程建筑物上下游的冲刷与淤积程度,确定拦砂建筑物的工作年限以及拦砂建筑物的长度等等。
This paper presents a numerical model suitable for calculating the shoreline deformation on a flat sandy shore. The difference compared with the past model is that the model considers the influence of the change of the coastline on the wave refraction due to the deformation of the shoreline. As an example, the siltation life of upstream of Nugang Jetty is calculated, and the result is quite close to the related physical model. For the calculation of the scouring process downstream of the jetty, the influence of coastal wave height on the rate of sand transportation along the coast is taken into account. This model can be used to estimate the extent of scouring and deposition upstream and downstream of coastal engineering structures on the sandy coast, to determine the working life of the sand-blocking structures and the length of the sand-blocking structures.