在数值模拟中重点对移动和固定网格法等进行了研究，并应用固定网格法对无压渗流场自由面进行了搜索计算。

We will have focal point study for moving and fixing grid law etc., have the application to the free surface search of he impressure influent fields.

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收集整理了渗流有限元已有成果，在渗流理论和有限元理论的基础上，对求解无压渗流自由面的几种常用方法进行了评价。

Based on basic theories of seepage and finite element, several prevailing methods used to solve free surface in unconfined seepage have been appraised.

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