CASE STUDY ON DESIGN METHOD TO REINFORCE OLD FILLDAM EMBANKMENT USING CEMENT-MIXED MUDDY SOIL

Abstract

Most of old fill-dams (H≧15m) was mostly accumulated with the muddy soil in reservoir that caused the water pollution and the reservoir capacity loss. In order to make efficient use of the muddy soil as the embankment soil for improving the damaged embankment, we have developed a new type method to improve the old small earth dam embankment (H<15m) by means of the cement-mixed muddy soil. This method is applicable to the improvement of the fill-dam embankment larger than the small earth dam embankment.
In this paper, we propose the design method using the strength parameters (c’ ,φ’) by triaxial compression tests to improve the old fill-dam embankment.