【摘要】 通过对床面颗粒的受力分析 ,在岷江都江堰河段和青衣江姜射坝河段的实测资料基础上 ,导出了卵石推移质运动状态数与爱因斯坦的推移质运动强度函数的关系 ,能较好地反映四川山区河流卵石推移质时均输沙率与水沙因素的关系。用对数正态分布描述卵石推移质输沙率的随机特性 ,证明在 95 %的置信水平下是成立的。更多还原

【Abstract】 Based on the analysis of forces on the particles, the pebble bed-load transport state number N was introduced by field data of pebble bed-load in the Dujiangyan reach of Mingjiang River and the Jiangsheba reach of Qinyijiang River in Sichuan Province. The stochastic characteristics of temporal pebble bed-load transport rate is described by a lognormal probability distribution. The Kolmogoroff test shows that 95% level of confidence can be obtained by this probability distribution function.更多还原