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通过回顾模型沙研究的过程，分析泥沙模型试验中因模型沙而引起的有关问题，评述常用的几种模型沙的物理力学特性和适用性，介绍模型沙研究的现状。
By reviewing the process of model sand research, this paper analyzes the problems caused by model sand in the sediment model test, reviews the physical and mechanical properties and applicability of several typical model sand, and introduces the current status of model sand research.