ABSTRACT
The selection of dam type and foundation design for earth-rock dams under complex geological conditions requires consideration of many factors, and the selection of seepage control measures are the key in the design of earth-rock dams. Based on the available ground investigation data, grouting test effect analysis, and hydraulic pressure test results, the three-dimensional finite element seepage analysis model was established to study the seepage properties of the loam core wall sand-gravel dam. The serious seepage problem of the dam foundation was analyzed. The alternative measure of horizontal seepage control was proposed and the seepage control measures of full basin and half basin were compared and analyzed. After the analysis of the seepage property, the seepage flow of the measure for the whole reservoir basin was small. The reasonable effectiveness of seepage control measures was clarified, which can provide reference for the selection of seepage control measures for earth-rock dams under the same type of geological conditions.
