Conclusions
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1.
A relation was obtained, using which we can determine the value of the noneroding velocity of a flow corresponding to a given reliability.
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2.
In relations of the form v=a√gdf (h/d) the parameter a for the velocity-squared region of resistance (for small values of h/d) is a variable.
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3.
The diversity of the formulas for determining the noneroding velocity of a flow and the difference of the values of the velocity obtained from the relations of various authors is explained by the fact that, first, a different degree of the “limit” state of the channel material (a different reliability of stability of the surface layer of the channel) corresponds to each formula and, second, the inadmissible assumption about constancy of parametera (see Paragraph 2) in the velocity-squared region of resistance of the channel is used.
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Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 6, pp. 21–25, June, 1985.
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Zharkov, Y.G. Determination of noneroding velocity with a given reliability for noncohesive coarse-granular soils. Hydrotechnical Construction 19, 285–293 (1985). https://doi.org/10.1007/BF02028559
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DOI: https://doi.org/10.1007/BF02028559