Probability Formula of Incipient Motion of Non-uniform Sediment
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Abstract:
The incipient motion of sediment is one of the most important subjects for the research of river dynamics. In this paper, the probability formula of incipient motion of non-uniform sediment was deduced using the combination method of probability and mechanics in consideration of the impacts of exposure degree and shape of sediment on the threshold velocity. The relationship between threshold velocity and threshold probability was developed. Compared with the measured incipient velocity, the formula can reflect the movement of non-uniform sediment accurately.
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