【摘要】 本文从截流抛石在河床面上接触边界分析出发 ,引入相对暴露度Δ和倾斜度θ两个指标来描述抛投块石在床面的物理特征 ;其次 ,依据抛石稳定机理 ,建立稳定率模型 ,并采用随机模拟方法对某工程截流设计进行稳定性分析计算 ,从数据结果中概化出抛石稳定率与流速和粒径之间的关系。更多还原

【Abstract】 In this paper,the grazing boundary of riprap and riverbed is analysed.The opposite exposure level Δ and its degree of inclination θ are introduced to describe the physical character of the riprap on riverbed.According to the mechanism of the riprap losing stability,a stability model is established,and the stability of riprap at a closure project is calculated with the help of the stochastic simulation method.The relationship between the stability of riprap and the flow rate and grain size is summarized.更多还原