The change of the flow dynamic axis brings to the intro year variation of Hanyang side bar which presents as scours in flood period and deposits in ft falling stage and dry period.

• 而枯水期水流动力轴线弯曲，水流动力轴线在潜洲尾部以下由左侧过渡到右侧的特点决定了汉阳边滩汛期冲刷，汛后以及枯水期淤积外展的规律；