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Original Articles Open Access
The anti-seepage effect of curtain under dam foundation may be weakened by the long term physico-chemical actions of groundwater. According to seepage hydraulics and geochemistry theory, and considering seepage, solute transport, geochemistry and curtain erosion, the analysis on the behavior of the curtain under dam foundation was conducted. The analysis results of a case proved that the curtain efficiency was weakening all the time, the primary reason of which is calcium had been always in dissolution during the simulation time. The erosion is much more seriously near the bottom of the curtain than the other parts, and the same from the upstream and downstream. Calcium dissolution is mainly controlled by hydraulic condition and dispersion; it varies in a non-linear way within the domain.
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Author(s): Hongyang Zhang and Liwei Han
Anti-seepage behavior of curtain, seepage, solute transport, geochemistry, curtain erosion, physico-chemical