University of Tabriz Journal of Civil and Environmental Engineering 2008-7918 42 66 2012 05 21 Effect of Horizontal Drains on Upstream Slope Stability During Rapid Drawdown Condition Effect of Horizontal Drains on Upstream Slope Stability During Rapid Drawdown Condition 29 34 3429 FA S. Mohammad Ali Zomorodian Department of Water Engineering, Shiraz University S. Mahdi Abodollahzadeh Journal Article 2015 04 26 : ٍEarth fill dams Rapid drawdown Drain Stability finite element method Limit equilibrium method https://ceej.tabrizu.ac.ir/article_3429_c7bdb3cc14de4b5873f3583e42f054bc.pdf