为了解决激波捕捉格式应用于浅水模拟所带来的源项,尤其是底坡项的处理这一难点问题,建立了一种边界条件给定简单的方法。采取构造单元内部流动变量分布的手段,避开了对底坡项的直接处理,综合了常用的Godunov型通量差分裂格式(flux difference splitting,FDS)和LeVeque波传播方法的思想。通过与“人工渗透法”相结合,该方法被应用于存在移动的干湿边界的情况。对2个有解析解和1个有实验观测数据的算例进行了模拟,模拟结果与解析解或观测数据吻合良好。该方法可有效处理复杂地形变化的二维浅水流动。 In order to solve the difficult problem of source term, especially slope term processing, which is caused by the application of shock-trapping format to shallow water, a simple method for the given boundary conditions is established. Taking the distribution of flow variables inside the structural unit, the direct treatment of the bottom slope is avoided, and the idea of ​​commonly used Godunov flux difference splitting (FDS) and LeVeque wave propagation methods are integrated. This method is applied to the case where there is a moving wet-dry boundary by combining with the “artificial infiltration method”. Two examples with analytic solution and one experimental observation data were simulated. The simulation results agree well with analytical solutions or observation data. The method can effectively deal with two-dimensional shallow water flow with complex topography.