导沙坎导沙机理及设计方法

根据水槽试验的结果，阐述了导沙坎防沙的原理、导沙坎附近水流及泥沙运动规律，分析了影响导沙坎导沙效果的几个主要因素：流速、导沙坎高度，以及导沙坎与水流的夹角．从推移质泥沙运动的机理出发，进行理论分析推导，得到导沙坎相对高度与相对水流强度的关系式，利用实际工程及模型实验的有关资料进行回归分析，确定出关系式的系数和指数，为实际工程的设计提供了科学的依格

Working Principle of Sediment Deflecting Sill and Its Designing Procedures

Based on the flume experiments, the principles of sediment prevention of sedimentdeflecting sill and the rules of water and sediment movement near the sill have been summarizedin this paper. the relation between the relative heingt of sediment deflecting sill and the relativeintensity of flow to sediment has derived from the mechanism of bed load movement, and the in-dex and coefficent of the relation have been determined by regression analysis lising the laboratorydata. This formula which we established here will be helpful to the design of hydroelectricc projects.