| Summary: | 碩士 === 淡江大學 === 土木工程研究所 === 82 === In this study, a preliminary investigation on hydraulic
drawdown and seismic stability condition os an earth dam was
presented. Theoretic srudies was conducted using finite
element code FEADAM84 and hypervolic model in cooperation with
laboratory triaxial data fram both drained and undrained
tests. The stress destribution and stability variation along
the dam were analyzed in the cases of 1. end of construction,
2. full reservoir condition, 3. rapid hydraulic drawdown and 4.
seismic impaction. Effects on the seepage though the earth dam
were neglected while the dynamic interactions were simulated by
using pseudo-static analysis. The results of the study show
that the general stability conditons at the end of construction
and full reservoir condition as well as the individual case in
rapid hydraulic drawdown and seismic impaction, are on the safe
side. However, surface portion of the embankment may encount
damage when seismic condition and hydraulic drawdown occur
simultaneously.
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