有坝渠首工程滩地改道的成因

The Cause of Flood Land Shifting near Channel Head Engineering Works with Dam

建立渠首水力特征图，结合渠首滩地的地形地质条件，河流动力学特点，分析渠首的滩地安危趋势，讨论渠首改造工程措施的适用条件。

In this paper,a diagram of hydraulic feature of channel head is established in combination with the geomorphological and geological conditions and the characteristics of river dynamics,and the flood land shifting tendency near channel head is analysed,and the suitable conditions of engineering measures for inprovement of channel head works are discussed as well.