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应用Boussinesq方程采用有限差分法建立了非线性数值波浪模式，并应用该模式对由航道开挖所造成水深变化对波浪传播产生的异常现象进行了数值模拟研究。从结果来看这种异常波浪局部增大现象是由于入射波与航道夹角过小，使波浪无法折射入航道，而在航道两侧反射叠加的结果。因此说水深的变化对波浪产生的反射现象也是不可忽视的。
The nonlinear numerical wave model is established by the finite difference method using the Boussinesq equation. The numerical simulation of the wave propagation caused by the variation of the water depth caused by the channel excavation is carried out by using this model. From the result, the phenomenon of local increase of this abnormal wave is due to the angle between the incident wave and the channel being too small, so that the wave can not be refracted into the waterway and the superposition results are reflected on both sides of the waterway. Therefore, it is not negligible to say that the changes in water depth reflect the waves.