应用有限单元法、有限差分法可以很方便地求得各种复杂边界条件下不同时刻渗流区内水头的分布情况。由此,联想到如何应用数值法直接用计算机同时计算出这种水头分布情况下,通过某一断面的流量或者流入各类取水建筑物的流量。关于这个问题以往文献中介绍的方法用起来不太方便。例如川本眺万曾提到通过一个三角形单元体单位厚度的渗流量为 Finite element method, finite difference method can be easily obtained under various complex boundary conditions at different times the headwater seepage area distribution. As a result, it is reminiscent of how to apply the numerical method to directly calculate the flow of a head through a section or a flow of water into various types of water intake structures by using a computer at the same time. The method described in the previous literature on this issue is less convenient to use. For example, Kawamoto had mentioned the per unit flow through a triangular unit