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开发了一种精确定量描述方法,用于描述山区河流的河床结构的发育分布及环境条件的影响。运用自行设计的床面形态测量排,测量了众多的河床结构。运用包含推移质在内的统一耗能模型,对测量统计结果进行分析,描述了河床运移。结果表明:在动力平衡条件下,河床结构强度值与单位宽度水流能量成正比。河床结构强度的沿程分布主要与水力条件相关。若河道中河床结构不足以消耗水流能量,则河流动力不平衡,多余的能量将侵蚀冲刷床面。
An accurate and quantitative description method has been developed to describe the development and distribution of riverbed structures in mountainous rivers and the effects of environmental conditions. Using self-designed bed shape measurement row, measured a large number of riverbed structure. Using the uniform energy dissipation model including pluton, the measurement results are analyzed and the riverbed migration is described. The results show that the structural strength of riverbed is proportional to the energy per unit width of water flow under dynamic equilibrium conditions. The distribution of riverbed structural strength is mainly related to hydraulic conditions. If the river bed structure is not enough to consume water flow energy, the river power imbalance, excess energy erosion erosion bed.