ESTIMATION OF HYDRAULIC STABILITY OF A CENTER CORE-TYPE ROCKFILL DAM

Abstract

The results of the reservoiring simulation of a center-core-type rockfill dam by means of finite element method are reported. Elasto visco-plastic soil/water coupled consolidation analysis using the constitutive equation suggested by Sekiguchi and Ohta was used. The calculated results, change of pore water pressure and the earth pressure during first reservoiring were compared with measured ones, and good agreement was obtained. A tentative plan for the first reservoiring control using this analytical results was suggested and put into practice at an actual dam.