为适应大坝监测工作的实际需要，提出一种大坝位移建模新思路，介绍了模型研究的意义和相关概念与理论；简述了模型的求解方法，并给出应用实例，对模型成果进行了对比分析，模型取得了满意的精度，具有实际意义。

In order to adapt to the practical needs of dam safety monitoring, a new approach to study the displacement mathematical model in dam monitoring is proposed，and the meaning of mathematical model, interrelated concept and theory are introduced. The calculation method of model is described. The calculation results obtained from an illustation show that it can acquire satisfactory accuracy . The model can be used in practice.