导沙坎导沙机理及设计方法  

Working Principle of Sediment Deflecting Sill and Its Designing Procedures

作　　者：张德茹[1] 梁志勇[1] 罗福安[1] 袁玉萍[1] 

机构地区：[1]中国水利水电科学研究院

出　　处：《水利水电技术》1996年第4期2-6,共5页Water Resources and Hydropower Engineering

摘　　要：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。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.

关 键 词：导沙坎 模型试验 泥沙运动 水流 设计 

分 类 号：TV673[水利工程—水利水电工程]