Abstract—A model has been developed that explains sediment accumulation within a groin field from the aspect of mass conservation. The model revealed that intergroin sedimentation is related to the gradient of the adjacent longshore sediment transport. An important model parameter is the length Λ of the structure’s zone of influence. It is shown that the accumulation rate reaches its maximum when the intergroin distance is close to Λ, while material accretion terminates when the distance is close to 2Λ. The optimal relationships between the intergroin distance, groin length, and width of the sediment flux have been obtained. This allows operational forecasting of the accumulation volume and distance the beach advances within time periods from hours to decades. The model can calculating the optimal groin field parameters to achieve the required performance and avoid unnecessary impacts. The calculations reasonably agreement with published observations.

中文翻译：

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腹股沟场对沙滩的影响

摘要-已经开发了一个模型，该模型从质量守恒的角度解释了腹股沟场内的沉积物堆积。该模型表明，腹股沟间的沉积与相邻的近岸沉积物输送的梯度有关。一个重要的模型参数是结构影响区域的长度Λ。结果表明，当腹股沟距离接近Λ时，蓄积率达到最大值，而当距离接近2Λ时，材料积聚终止。得到了腹股沟距离，腹股沟长度和沉积物通量宽度之间的最佳关系。这样就可以对从几小时到几十年的时间段内海滩前进的蓄积量和距离进行操作预测。该模型可以计算最佳腹股沟场参数，以实现所需的性能并避免不必要的影响。计算结果与已发表的观察结果合理地吻合。