Three-dimensional seepage analyses and seepage control measures for earth rockfill dam

For the sake of solving seepage control of the upper cofferdam and leakage around the dam and determining optimum anti-seepage scheme,it was proposed to executed the three-dimensional seepage calculation on impervious curtain of the loose body on left bank for Bingling hydropower project,and to make the sensitivity analyses of anti-seepage range and rows of grouting as well.By calculation of various anti-seepage schemes,relative optimization was performed for the loose body on right bank in the seepage control scheme.That has satisfied design requirements of seepage control.