Abstract
"Watertight embankment using L-shaped geosynthetic" is a counter-measure to prevent the embankment failure in the event of heavy rainfall. The significance of this technique in reducing the water level in the embankment has been corroborated in seepage flow model test coupled with numerical simulation (Shibuya et al, 2008). In this paper, the engineering significance of "watertight embankment using L-shaped geosynthetic" is carefully examined in seepage flow test performed using a full-scale, and fully instrumented, embankment with 2.5m high. In the full-scale test, seepage characteristics as well as the deformation characteristics were measured, and also simulated numerically, for a couple of embankments with and without the L-shaped geosynthetic drain.
