検査技術・診断(10)

[VI-343] A case study of quantitative evaluation of seepage of the rock-fill dam

Shigeki Ichikawa², Tsuda Morimasa², 〇Seiichi Ikeda¹ (1.OYO CORPORATION, 2.Japan Water Agency)

Keywords:rock-fill dam, dam maintenance, amount of seepage water, tank model, snow model, snowmelt model

Seepage of rock-fill dam is one of important monitoring items in safety management of dam. Amount of the seepage observed in rock-fill dams consists of not only embankment or foundation of dam, but also rainfall. For proper evaluation of seepage control of rock-fill dam, it is important to exclude amount of rainfall in monitoring data of the seepage. In this study, we considered a method for dam operators to evaluate conditions of the seepage control, doing case analysis for proper dam management. From these results we confirmed that the method is applicable to evaluate the seepage control.