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http://dx.doi.org/10.14481/jkges.2020.21.2.5

Numerical Analysis of Relief Well Effect for Seepage Control of Small Fill Dam  

Chang, Jaehoon (Korea Engineering Research Co., Ltd.)
Yoo, Chanho (Asin Civil engineering & Technology Co., Ltd.)
Baek, Seungcheol (Department of Civil Engineering, Andong National University)
Publication Information
Journal of the Korean GEO-environmental Society / v.21, no.2, 2020 , pp. 5-13 More about this Journal
Abstract
The relief wells have been studied to be effective in seepage control in small dams such as agricultural dams. However, quantitative studies on the effects of the relief well are rare and there is no design standard also. To quantitatively analyze the effects of the seepage control in small dams, the research of up-lift pressure influencing the toe of dam body was conducted by seepage analysis, which investigates the behavior characteristics, according to the conditions of dam and foundation. The effect of seepage control was studied by analyzing the reduction effect of up-lift pressure at foundation ground of the toe of downstream dam slope depending on the installation of the relief well. As a result, it was found that the relief wells are effective in reducing the pore water pressure in the foundation, which can cause piping and sliding failure.
Keywords
Relief well; Fill dam; Seepage control; Up-lift pressure;
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