DEVELOPENT OF LAMINAR DRAIN REINFROCED LEVEE WITH HIGH RESISTANCE AGAINST OVERFLOW EROSION AND INFILTRATION

Abstract

This study presents a laminar drain reinforced (LDR) levee which may have high resistance against both overflow erosion and infiltration. In the LDR levee, laminar drain laid along the back slope of the levee is connected with surface panels and levee materials by geogrid layer. In this study, we conducted largescale model tests of levees with 1m height against overflow erosion. The results of the model test revealed that: 1) the LDR levee maintained the initial shape of levee even after two hours and a half. 2) Furthermore, the LDR levee can prevent the erosion of the levee body due to the laminar drain at side slope even after the gaps between surface panels exceeded 5 cm.