摘要
塑料沙近年来己较广泛用于推移质和悬移质泥沙模型试验。但目前塑料沙试验基本限于圆球形细颗粒泥沙模拟,粒径较大的散粒体泥沙(砂砾石状塑料沙)模拟较少,本项目通过水槽试验,建立了砂砾石状塑料沙的起动流速公式,并通过与已有塑料沙起动流速公式的对比,证明得出的起动流速公式可行,为粒径较大的散粒体泥沙(砂砾石状塑料沙)的起动流速计算提供依据。
Plastic sand has widely used in bed load and suspended load sediment model experiments,but basicly limited to fine sediment models. Large size particle sediments( gravel-shaped plastic sand) used less in the experiment currently. Based on the flume experiment,the incipient velocity formula of a gravel-like plastic sediment was established. By comparing with other formulas,the incipient velocity formula is feasible for the larger size of granular sediments.
引文
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