The evaluation results of dike breach risk show the following distributing regularities of the hang river dike breach risk in the lower yellow river : ( 1 ) the dike breach risk increase with the increasing of flood . ( 2 ) dike breach risk decreases with the river types change along channel . ( 3 ) the reaches of greater dike breach risk mainly distribute in wandering reaches 评价结果表明黄河下游悬河决溢风险具有以下分布规律: ( 1 )决溢风险随着洪水量的增大而增高; ( 2 )决溢风险随河型的沿程变化而降低; ( 3 )决溢风险较大的河段集中在游荡型河段; ( 4 )游荡型河段南岸的决溢风险相对较高; ( 5 )弯曲型河段北岸决溢风险高于南岸。
