底层泥沙交换和状态概率及推悬比研究

本文首先论述了床面层泥沙静止、推移(滚动与跳跃)和悬浮三种运动状态及它们转移的临界条件，四种基本转移概率和由它们构成的九种状态转移概率。接着利用数字计算结果，给出了四种基本转移概率，并分析了它们的特性。在这个基础上计算了泥沙在床面层处于静止(床沙)、推移(推移质)、悬浮(悬移质)的状态概率。最后作为状态概率的应用给出了推悬比的公式。

Study on state probabilities and the ratio of bed load to suspended load

In this paper,the movement states of particles on the surface layer of river bed including at rest,in bed load transport and in suspension and their critical conditions for transform are described.The probabilities of four states consisting of probabilities of four basic transforms and four states are presented.The probabilities of four basic transforms are calculated and their characteristics are analyzed according to the numerical results.As a result,the of probabilities of states are obtained and used to deduce the formula for calculate the ratio of bed load to suspended load.