Parametric Study of Filter Lengths Effect on Stability of Earth Dams

Author: Thamir Mohammed Ahmed1
1Civil Engineering Department, Tishk International University, Erbil, Iraq

Abstract: Seepage is one of the main reasons behind the earth’s dam failure which needs high attention to prevent or govern its negative effect. One of the most effective parts that may reduce the effect of seepage and keep it within permissible limits is the filter which mostly installed at the downstream end of the dam base. In this study, the effect of many filter lengths on the main stability elements of the earth dam due to downstream arc failure was examined. Furthermore, the filter length effect on the seepage amount and behavior of pore water pressure has also been studied. Different random homogenous silty earth dam sections have been used and the analyses using the (SLOPE/W and SEEP/W) numerical analysis program were performed. The findings showed that filter length has a significant effect on the variation of pore water pressure whereas less effect is indicated on the rate of seepage flow inside the earth dam body.

Keywords: Earth Dam Filter, Earth Dam Stability, SEEP/W

Download the PDF Document

doi: 10.23918/eajse.v6i1p56


Abbas, J. K. (2017). Determination of Flow through Homogeneous Earth Dams with Triangular Toe Filter. Tikrit Journal of Engineering Sciences, 24(1), 81-88.

Al-Labban, S. (2018). Seepage and Stability Analysis of the Earth Dams under Drawdown Conditions by using the Finite Element Method.

Chowhury, M. A., Kunitake, M., Kondo, F., Inagaki, H., Ogata, H., Saito, M., & Kakuda, I. (1996, January). Estimation of the parameters of seepage through an earth dam. In The Sixth International Offshore and Polar Engineering Conference. International Society of Offshore and Polar Engineers.

Fei, K., & Zhang, J.W. (2010). ABAQUS application in geotechnical engineering. Beijing: China Water Power Press.

George, M., & Annandale, G. W. (2006, January). Dam failure by rock scour: evaluation & prevention (A Case Study). In Golden rocks, 2006, The 41st US Symposium on Rock Mechanics (USRMS). American Rock Mechanics Association.

Griffiths, D. V., & Lane, P. A. (1999). Slope stability analysis by finite elements. Geotechnique, 49(3), 387-403.

Luca, A. L., & Pop, O. A. (2016). Earth dam stability-the analysis of filtration process. Scientific Papers-Series E-Land Reclamation Earth Observation & Surveying Environmental Engineering, 5, 33-38.

Mishal, U. R., & Khayyun, T. S. (2018). Stability analysis of an earth dam using the GEO-SLOPE model under different soil conditions. Engineering and Technology Journal, 36(5 Part (A) Engineering), 523-532.

Tatewar, S. P., & Pawade, L. N. (2012). Stability analysis of earth dam by geo-studio software. Int. J. civ. Eng. Technol, 3(2), 437-446.