A Study on the Effect of Implementing Waterproof Membrane on Reduction of Water Seepage from Earthen Dams (Case Study: Shahid Madani Earthen Dam, Tabriz, Iran)
Abstract. It is a major concern in engineering to evaluate the seepage rate for controlling earthen dams. With regard to the ever-increasing construction of earthen dams in Iran, it seems inevitable to make accurate assessments of the stability and leakage of water in order to achieve optimal operation and prevent possible problems. The seepage analysis in designing a dam is important in terms of stability and safety. Because the flow of water in the dam body and under the foundation causes pore pressure and seepage force to exceed allowable limits, where the stability of the dam body and foundation materials will face several problems such as piping and internal erosion of backfill and foundation materials, which will eventually lead to the destruction of the dam. Several engineering methods have been developed for precisely analyzing the seepage rate and estimating the output rate and pore water pressures generated at any part of the dam body and foundation, one of which is the most widely used numerical method known as "finite elements". In order to investigate the leakage of water from the dam and stability of its slope, the Shahid Madani Dam in Tabriz was selected as case study. This dam is located five kilometers from the city of Tabriz, East Azerbaijan Province, Iran. The specifications of the dam were inserted as input date into software Seep/W and Slope/W, which are the basis for Seep/W numerical finite element method and the basis for Slope/w limit equilibrium method. The results showed that the rate of seepage in the earthen dam fall within the allowable limit. Moreover, the stability of embankments fulfills the factor of safety with regard to the type of material used.
Ambikaipahan. R., Failure of an Earth Dam. MSc Thesis in Geosciences. Department of Geosciences. Oslo. Norway. 2011.
Berrones, R. F. and Lopez, A. N. Internal Erosion Due to Water Flow Through Earth Dams and Earth Structures. (Publisher Intech, 2011)
Dunbar, S. W; and Sheahan, T.C. Seepage Control Remediation at Hodges Village Dam. Journal of Geotechnical and Geo environmental Engineering, 125 (3), 198-206 (1999).
Ersayin, D. Studying Seepage In A Body Of Earth Fill Dam By Artificial Neural Networks. MSc Thesis . Department of civil Engineering. Izmir Turkey. 2006.
Hassani, H.; Mamizadeh, J.; Karimi, H. Stability of Slope And Seepage Anlayze In Earth- fill Dams Using Numerical Models (Case Study :Ilam Dam- Iran). World Applied Sciences Journal. 21 (9), 1398-1402 (2013).
Hillo, A. Finite Elements For Seepage Below Hydraulic Structure On Anisotropic Soil Foundation. MSc Thesis. College of Engineering. University Of Basreh. Iraq. 2007.
Hosseini, S. M; Fard, R. A. Pore Pressure Development in the Core of the Earth Dams During Simultaneous Construction and Impounding. Journal of EJGE. http:// www.ejge.com (2002)
Irzooki, R. H. Investigation And Analysis of Seepage Problems on The Left Side of Al- Quadisia Dam. PH.D Thesis. Department of Building and Construction Engineering. University of Technology. Iraq. 1998.
Kiyani, M. Determining The Optimum Depth for Sealing in Earth-fill Dams (Case study: Gotvand Dam- Iran). M.Sc Thesis . Department of Civil Engineering. Tabriz University. 2011.
Khsaf, S.I. Numerical Analaysis of Seepage problems with Flow Control Devices Underneath Hydraulic Structures. PH.D Thesis. Dept of Building and Construction Engineering. College of Eengineering. University of Technolgy. Iraq. 1998.
Naseh, S.; Ghafoori, M.; Hafezi Moghaddas ,N.; Lashkaripur, G. Investigation of Seepage Paths in Left Abutment of Bidvaz Dam Using Tracing Technique. International Journal of Emerging Technology and Advanced Engineering. 3 (4), 719-724 (2013)
Robertson, P. K. Evaluation of Flow Liquefaction and Liquefied Strength Using The Cone Penetration Test. Journal of Geotechnical and Geo environmental Engineering. 136 (6), 842-853 (2010)
Tayfur, G.S.; Wita, A.; Singh, V. Case Study Finite Element Method and Artificial Neural Network for Flow through Jeiziorsko Earth-fill Dam in Poland. J.Hydrual.Eng. 136 (1), 431-440 (2005).
Yilmaz, I. Ersin ,Y. Selection of Core material for an Earth Dam in The Lower Cekerek Basin, Tokat, Turkey. Journal Of EJGE. http:// www.ejge.com/2004/ppr0472/abs0472 (2004).
Yusif al Labban, S.N. Seepage Analysis of Earth Dam by Finite Element. MS.c Thesis. College of Engineering University of Kufa. Iraq. 2007