In the bedload movement process, coarse sand tended to stay on the sand bar, find sand was brought away.
底沙运动过程中粗粒沙滞留在沙洲，细粒沙被搬走。
The achievement of this paper has an important reference value in analyzing the mechanics of bedload movement in the mount river without field data.
本文的研究成果对分析没有实测资料的山区河流卵石推移质的运动规律具有重要的参考价值。
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