The results showed the following: the siphon drainage effect of hank slope is not markedly obvious with more penetrable rock soil, hut is obvious for soil with less penetrability.

• 结果表明：对于渗透性较大的岩土体，岸坡虹吸排水效果不明显，而对于渗透性较小的岩土体，岸坡虹吸排水效果明显。