Abstract
This paper investigates applicability of the method determining blanket design length based on the analytical solution proposed by Yoshitake et al. (2011) to smaller embankment dams, and demonstrates its validity to the application of half-size of the dams employed in the previous study through the comparison with results computed by BEM. Then, the reason why the resultant design blanket length of smaller dams is always larger than that of larger ones is investigated by introducing the idea of effective seepage path length. This investigation reveals that the effective seepage path lengths of the half-sized dams are almost the same as those of the original dams, keeping the high accuracy of analysis compared to the BEM solution.
