Abstract
The diaphragm cutoff walls have been lately adopted for foundation treatment of embankment dams constructed on alluvial deposits.
The stability of embankment dam with diaphragm cutoff wall depends upon the structural behavior of contact part between the top of diaphragm wall and dam body. Thus, comprehensive studies on the behavior are indispensable, neverthless reasonable methods for structural analysis to the problem have not fully been established yet. This paper proposes the analytical method for evaluating earth pressures acting on the top part of diaphragm wall of embankment dam and confirms its validity through the comparison of predicted values with measured values on the various points at TADAMI DAM.