以重力坝水平位移为代表，探索了一种以物理力学方法获得多测点二维分布模型合理初选因子群的途径，实现了二维分布数学模型在计算机上的求解，并结合丹江口大坝水平位移观测资料，为该类分布数学模型在实际中的应用作出了第一个实例，经检验，所建模型拟合效果、预报效果都很理想． Taking the horizontal displacement of gravity dam as representative, this paper explores a way of obtaining reasonable primaries by means of physical mechanics, and realizes the solution of two-dimensional distribution mathematical model on the computer. Combining Danjiangkou dam The first example is the application of the mathematical model of this kind of distribution in practice. The result of the test shows that the fitted model and the forecasting result are both ideal.