Furthermore, the cause for the formation of goose-neck bifurcated channel is also investigated.The results of this paper are helpful to the river regulation in engi neering practice.

• 对鹅头型分汊河道的形成条件及演变特征的研究是制订相应的规划整治措施，稳定河势，使其朝着有利的方向发展的前提条件，也是实际工程迫切要求解决的问题。