In the paper, the dam seepage analysis is conducted with no depth contact interface element to simulate layer surface.

本文采用无厚度的接触界面单元模拟层面，进行了坝体的渗流分析。

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The dynamic interaction between an embedded object and surrounding media with a unilateral frictional contact interface is studied by time-domain boundary element method.

应用时域边界元法研究了结构介质动力相互作用问题。

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