摘要
通过对泥沙颗粒在水流中的受力情况的分析,推导出泥沙处于临界起动状态时的近底水流流速。运用概率论的思想,建立其与泥沙起动概率的关系,并根据指数垂线平均流速公式将近底流速转变为容易测量的垂线平均流速,使得泥沙的起动概率可直接通过测量水流速度来确定,为泥沙起动的概率研究提供了一个很好的工具。
The flow velocity near the base under critical tractive condition of silt is got through the analysis of silt grain stressing in the flow. The relationship between the mean velocity in vertical and the silt tractive probability is set up based on the probability, the flow velocity near the base is transformed into the mean velocity in vertical that is easy to measure based on the formula of index mean velocity in vertical. The tractive probability is made to divectively fix through measuring the flow velocity, a good tool is provided for study of silt tractive probability.
出处
《东北水利水电》
2004年第6期1-2,5,共3页
Water Resources & Hydropower of Northeast China
关键词
平均流速
泥沙
起动概率
起动流速
mean velocity
tractive probability
tractive velocity
