Impact of Impervious Wall on Seepage Characteristics and Stability of Small Reservoir Dams
CHEN Jun
CHEN Xiaofeng
MEI Haipeng
ZHU Shujuan
Abstract：To evaluate the impact of impervious walls on the seepage characteristics of a small(Type 2)reservoir dam,this paper employs numerical simulation based on Autobank software to compare and analyze the seepage characteristics and downstream slope stability of the dam body under two conditions:with and without an impervious core wall.Five typical operating conditions are selected for the study,and key parameters such as the exit point slope,horizontal segment slope,exit point elevation,seepage flow rate,and slope safety factor are quantitatively calculated.The research results show that after the installation of the impervious wall,the exit point slope,horizontal segment slope,exit point elevation,and seepage flow rate of the dam body are significantly reduced,and the dam slope safety factor is improved.The impervious core wall ensures the seepage stability of the dam body and plays an important role in the safe operation of the dam.
Keywords：impervious wallseepage characteristicsnumerical simulationescape point gradientseepage flowsafety factor
Publication Date：2026-05-20
Online Publishing Date：2026-09-16(First online date of this platform, not the publication date of the document)
Pages：6( 114-119 )