岡山大学環境理工学部研究報告 ISSN 2187-6940
Published by Faculty of Environmental Science and Technology, Okayama University

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Prediction of Pore Water Pressures in Several Embankment Dams by Normal and Back Analyses

Fujii, Hiroaki
Narita, Mutsuya
Cheng Chin Thai
Shimada, Kiyoshi
Nishimura, Shinichi Kaken ID researchmap
Ofori Emanual
Abstract
This paper describes the prediction of seepage in the impervious zones of six embankment dams by seepage analysis. In addition, by making use of the available monitored pore water pressure data of the first filling of reservoir, back analysis was carried out to estimate the best fit seepage parameters. The estimated parameters were used for further prediction of pore water pressures in subsequent monitored durations with reasonable accuracy. The accuracy of prediction was evaluated quantitatively by the prediction difference and error index. The results show that the error indices in the upstream sides of the impervious zones are smaller than those in the downstream sides.
Keywords
Unsaturated soils
fill dams
pore water pressure
back analysis
FEM
ISSN
1341-9099
NCID
AN10529213
NAID