柔性植物对海堤堤前波高的影响试验研究

经过调查研究后,采用人工柔性植物模拟海堤外滩地柔性植物,利用规则波进行物理模型试验,系统分析了波浪在有柔性植物滩地上的传播变形规律;以及不同波周期、植物宽度、植物高度、植物密度对海堤堤前波高的影响。试验表明:随着植物宽度和植物密度的增加,消减系数随着增加;反之减小。由于植物造波作用的影响,柔性植物对大周期来波的消减效果较好;植物高度与水深一致的时候的消减效果较好。

Experimental on Wave Dissipation by Flexible Vegetation in front of Breakwater

Based on relevant research, a kind of artificial flexible plant is introduced to simulate flexible seabed vegetation in this paper. Wave propagating process through flexible vegetation field is investigated systemically in accordance with the results from regular wave model experiments on various model settings distinguished by different field width, plant height, plant density and incident wave characteristics. According to experimental results, wider vegetation field and greater plant density both can increase the dissipation coefficients and vice versa. Flexible vegetation has a good dissipation on those low frequency incident waves since the flexibility of plants can make new waves. Additionally, a good dissipation can be obtained if the plant height is equal to the water depth.