考虑起动概率的无粘性均匀沙起动条件

Incipient Motion Conditions with Incipient Probability for Non Cohesive Uniform Sediment

根据无粘性均匀沙起动的力学条件，在已有研究成果基础上，推导出泥沙起动概率与水流条件之间的关系式，得到考虑起动概率的起动切应力及起动流速公式，并将起动条件与起动标准联系分析。通过对现有几个典型无粘性均匀沙起动条件公式分析表明，本文公式较为合理。

According to the mechanical condition of incipient motion of the non cohesive uniform sediments and using some results of other researches, the relationship between incipient probability and flow condition is established. The formulae of incipient shear stress and incipient flow velocity in which the incipient probability has been taken into account is obtained, the incipient criterion has been connected with the incipient motion condition. The analysing of some typical formulae for incipient motion condition of non cohesive uniform sediment shows that the formulae of this paper is rational.