【摘 要】
：
在天然河湾中,许多横断面的床面横坡并非为一条直线,而是一条折线,存在一个明显的折点,本文首先通过大量的床面横坡具有折点的断面资料统计分析,研究了折点在床面横坡上的位
【机 构】
：
成都科技大学,成都科技大学,成都科技大学,成都科技大学
论文部分内容阅读
在天然河湾中,许多横断面的床面横坡并非为一条直线,而是一条折线,存在一个明显的折点,本文首先通过大量的床面横坡具有折点的断面资料统计分析,研究了折点在床面横坡上的位置,然后以折点为界将床面横坡分成两个部分,借助我们已取得的弯道三维水流流速计算公式建立了一个新的横剖面数值预报模型,模型用原型观测资料进行了验证并与前人的横剖面预报模型进行了比较,结果表明新模型比已有的模型能更好地反映弯道床面形态特征,计算值与实测值吻合良好,
In the natural river, many cross-section of the bed slope is not a straight line, but a broken line, there is a clear turning point, this paper first through a large number of bed slope with a broken section of the statistical analysis of the data, Then, the breakage point is used to divide the horizontal slope of the bed into two parts. Based on the calculation formula of the three-dimensional flow velocity of the curve we have obtained, a new numerical model of cross-section numerical prediction is established , The model is verified with the prototype observation data and compared with the previous cross-sectional prediction model. The results show that the new model can better reflect the curve shape characteristics of the curve than the existing models, the calculated values are in good agreement with the measured values,
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