节点计数法的表层床沙级配分析方法实验研究  

Experimental study of surface bed sediment gradation analysis method by node counting method

作　　者：梅芸[1] 李志晶[2] MEI Yun;LI Zhijing(Laboratory and Equipment Management Office,Wuhan University,Wuhan 430072,China;Changjiang River Scientific Research Institute,Wuhan 430012,China)

机构地区：[1]武汉大学实验室与设备管理处,湖北武汉430072 [2]长江水利委员会长江科学院,湖北武汉430012

出　　处：《实验室科学》2023年第2期22-25,共4页Laboratory Science

摘　　要：提出了一种基于节点计数法的表层床沙级配分析方法,通过在床沙表面布设网格,统计分析不同粒径所占网格结点比例,从而输出床沙表面级配分布数据。此方法可以避免传统方法必须在河床取样的劣势,能够在不中断实验过程的条件下,研究监测区间的非均匀河床表层床沙级配随时间的变化过程,实现表层床沙级配的实时观测与分析。此方法可以推广至水力学及河流动力学专业各类水沙模型实验当中,大大提高了实验过程中床沙级配观测的便利性和实效性。In this paper,a method based on node counting method is proposed to analyze the surface bed sediment gradation.By arranging grids on the surface of riverbed are captured by camera equipment,and the proportion of different particle sizes in the grid nodes is statistically analyzed,so as to output the surface bed sediment gradation distribution data.This method can avoid the disadvantage that the traditional method must take samples.Without interrupting the experimental process,the variation of the surface bed sediment gradation of the non-uniform riverbed in the monitoring area with time can be studied,and the real-time observation and analysis of the surface bed sediment gradation can be realized.This method can be extended to all kinds of non-uniform sediment model experiments of hydraulics and river dynamics,and greatly improve the convenience and effectiveness of bed sediment gradation observation in the experimental process.

关 键 词：节点计数法 表层床沙 自动观测 级配分析 

分 类 号：TV149[水利工程—水力学及河流动力学]