Sheng-fa Yang

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Due to the particular bed composition of mountainous river, experiment was carried out combining the two dimensional mathematical model and the local physical model. Boundary conditions of the local physical model were provided by the results of mathematical mode. The river-bed scouring around and bilateral cofferdam of jiangjin-guanyinyan bridge's 10# pie(More)
Based on the friction partition theory (Einstein 1942) and affections of breadth depth ratio on roughness(Knight 2002), the relationship between bed and wall roughness coefficient is researched though 28m flume experiment. The measured water level agree with the calculated one which supposed n = n<inf>b</inf> = n<inf>w</inf>. And it proves that bed(More)
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