EFFECTS OF AIR PERMEABLE-WATERPROOF SHEET ON RIVER EMBANKMENT EROSION PREVENTION DUE TO OVERTOPPING WATER

Abstract

The river embankment failure due to overtopping of river water is mostly generated by the back slope erosion of the embankment. By using air permeable-waterproof sheet in the condition of overtopping water, we experimented its erosion resistance on the back slope and the boundary with drains set at the bottom of the back slope which is claimed to be a weak point in terms of erosion. As a result, we could find effectiveness of air permeable-waterproof sheet against back slope erosion of the river embankment due to overtopping water.