عنوان مقاله [English]
Analysis of flow passing through earth dam as an important problem is included in analysis and design of earth dams. In this research by using a numerical method based on finite difference; called extended pressure, location of the first seepage stream in earth dam as well as developed pore pressure in the dam body was investigated. In order to assess the accuracy of the applied method, results with analytical solution in one dimensional condition and in case of two dimensional conditions. The numerical results were compared with results obtained from earlier experimental data and other methods. Furthermore, the results obtained were compared with results of SEEP/W as popular software in seepage analysis. The results of this investigation confirmed that the presented method estimates the location of phreatic line and pore pressure distribution very well in earthen dam. Finally, a dimensionless parameter was presented for determination of exact height of water table.
Ahmadi, H., Rezaee, H. and Zeinalzadeh, K. 2014. A laboratory study of the effect of the function
of hydraulic conductance on modeling of seepage from earth dams. Iranian J. Soil Water Res.
45(3): 299-307. (in Persian)
Athani, A., Shivamanth, C. H., Solanki, G. and Dodagoudar, R. 2015. Seepage and stability analysis of earth dam using finite element method. Aquat. Procedia. 4, 875-883.
Bardet, J. P. and Tobita, T. 2002. A practical method for solving free-surface seepage problems. Comput. Geotech. 29(6): 451-475.
Borja, R. I. and Kishnani, S. S. 1991. On the solution of elliptic free-boundary problems via newton’s method. Comput. Method Appl. M. 88(3): 341-361.
Fu, J. F. and Jin, Sh. 2009. A Study on unsteady seepage flow through dam. J. Hydrodyn. 21(4): 499-504.
Ji, C. N., Wang, Y. Z. and Shi, Y. 2005. Application of modified EP method in steady seepage analysis. Comput. Geotech. 32(1): 27-35.
Kacimov, A. and Obnosov, Y. 2012. Analytical solutions for seepage near material boundaries in dam cores: the davision-kalinin problems revisited. Appl. Math. Model. 36(3): 1286-1301.
Krahn, J. 2004. Seepage Analysis Modeling with Seep/W: an Engineering Methodology. Geoslope International Ltd. Calgary, Alberta, Canada.
Lacy, S. J. and Prevost, J. H. 1987. Flow through porous media: a procedure for locating the free surface. Int. J. Numer. Anal. Met. 11(6): 585-601.
Lashteh-Nashaei, M., Jamshidi-Chenari, R. and Madandoust, A. 2011. Determining the seepage free level by using the MFS method in earth dams. Proceedings of the 10th Iranian Hydraulic Conference. Nov. 8-10. Rasht, Iran. (in Persian)
Pitcher, B. A. 2005. Water seepage through a dam: a finite element approach. AM466b final project. University of Western Ontario, USA.
Rezak, M. and Senoon, A. 2011. Analytical solution of seepage through earth dam with an internal core. Alex. Eng. J. 50(1): 111-115.
Zheng, H., Liu, F. and Li, C. H. Primal mixed solution to unconfined seepage flow in porous media with numerical manifold method. Appl. Math. Model. 39(2): 794-808.