本文采用分区级数解的形式,导出了直立堤前有变化地形时无旋波动的基本特征——速度势的表达式,并通过电子计算机运算获得了相应流场的解析解。还就波浪作用下直立堤前的细砂冲刷剖面的最大水平流速分布的模型试验结果,以及对应的平底理论解值作了比较,认为本数值模型在底面附近有一定的代表性。 In this paper, the form of zonal series solution is used to derive the expression of velocity potential, which is the basic feature of non-undulating fluctuation in the front of dike, and the analytical solution of the corresponding flow field is obtained by computer calculation. The model experimental results of the maximum horizontal velocity distribution of sand flushing section before the vertical embankment under wave action are also compared with the corresponding flat bottom theoretical solution values. The numerical model is considered to be representative near the bottom.