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基于分形原理,通过波浪水槽试验,对波浪作用下的海滩剖面形态开展分形维数计算和分析,探究分形理论应用于海滩剖面演化规律研究的可能性。结果表明:海滩剖面分形维数可以用于描述海滩剖面形态的不规则程度和复杂性,分形维数越大,海滩剖面形态越复杂。同时,围绕波浪动力因素变化对海滩剖面分形维数的影响展开讨论,波浪类型、波高和水深的变化均会导致海滩剖面分形维数的改变,波浪类型和波高的变化对海滩剖面维数的影响更明显,而水深变化导致的波浪因素变化对海滩剖面分形维数的影响相对较小。研究发现随着波浪作用时间的增长,海滩剖面分形维数最终朝平衡方向发展。
Based on the fractal principle, the fractal dimension of the beach profile under wave action was calculated and analyzed by wave flume test, and the possibility of application of fractal theory to the study of beach profile evolution was explored. The results show that the fractal dimension of beach profile can be used to describe the irregularity and complexity of the beach profile morphology. The larger the fractal dimension, the more complicated the beach profile. At the same time, the influence of wave dynamic factors on the fractal dimension of beach profile is discussed. The change of wave type, wave height and water depth will lead to the change of fractal dimension of beach profile, the influence of wave type and wave height on beach profile dimension More obviously, the change of wave factor caused by the change of water depth has a relatively small influence on the fractal dimension of beach profile. It is found that the fractal dimension of the beach profile eventually develops in a balanced direction as the wave action time increases.