In this paper, we utilize sand model test as the basis to study the physical and mechanical processes of unsteady seepage in homogeneous earth DAMS on impervious foundation.

本文以砂模型试验为基础，探讨了不透水地基均质土坝非稳定渗流的物理力学过程。

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The selection of model sand is the key problem in the design of a mobile bed model test.

对于研究泥沙问题的动床模型试验，模型沙的选择是模型设计的关键。

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On the basis of test research, unloading arc calculating model and arc beam mechanical model are set up, thick sand stratum's rupture law is exposed.

在实验研究的基础上，建立了“卸荷拱”计算模型及“拱梁”力学模型，初步分析了厚沙土层的破坏机理。

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