Empirical Evaluation on Seepage of Fill-Dams Using Reservoir Water Level and Rainfall

Abstract

Seepage of fill dams fluctuate due to rainfall and reservoir water level. To determine the stability of a dam, it is general, comparing the seepage on the same reservoir water level and effect of rainfall is small. However, the method thereof, it is difficult to determine the safety during rainfall and after the rainfall. There is a problem that cannot be constantly monitored. The authors analyzed the seepage caused by rainfall and reservoir water level. As a result, authors showed the normal range of the seepage without effect of rainfall. Further, based on seepage data during rainfall, consider representative of the effects of rain by a simple empirical equation form, it was investigated a method that can continuously monitor the influence of rainfall. Using these results, an actual dam was monitored and confirmed to be suitable for safety evaluation of fill dam.