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地下水流问题的数字计算机的应用,现虽处于高度发展阶段,但在采用这种数学物理模型时,首先要知道含水层的导水性能。过去利用水位观察资料或抽水试验资料计算水文地质参数的方法,只能适用于简单的含水体系,由于高度复杂的地质体并且间隙水流为非线性的这类参数如何确定还没有解决,如果利用近期发展起来的有限单元法来反求参数是一种理想的选择,特别是与古典的伽勒金法结合起来,既可简化数学处理过程,并有利于解非线性流问题。古典的伽勒金法原来只能适用于简易的分析域,而且要求介质为均一,但与空间离散的有限单元法结合起来,还便于解非均质而且边界不规则的问题。
The application of digital computer to groundwater flow problem is now at a high level of development. However, when using this mathematical and physical model, we must first know the water conductivity of the aquifer. In the past, the method of calculating hydrogeological parameters by using observation data of water level or pumping test data can only be applied to simple water-bearing systems. Since the determination of such parameters of highly-complex geological bodies and non-linear interstitial water flow has not been solved, The finite element method developed to reverse the parameters is an ideal choice, especially combined with the classical Galilean method, which can not only simplify the mathematical process, but also help to solve the nonlinear flow problem. The classical Galilean method can only be applied to a simple analysis domain, but also requires the medium to be uniform, but it is also easy to solve the problem of heterogeneity and irregular boundary with the finite element method of discrete space.