%0 Journal Article %T Accuracy of SEEP/W model in predicting seepage line and flow rate through lengthy coarse ‎porous medium %J Iranian Journal of Soil and Water Research %I University of Tehran %Z 2008-479X %A Ansari, Eshagh %A Sedghi Asl, Mohammad %A Parvizi, Mansour %D 2016 %\ 07/22/2016 %V 47 %N 2 %P 355-362 %! Accuracy of SEEP/W model in predicting seepage line and flow rate through lengthy coarse ‎porous medium %K Porous media %K Numerical model %K Laboratory Model %K Flow Profile and seepage discharge %R 10.22059/ijswr.2016.58340 %X In this paper, subsurface water profiles through coarse porous medium are investigated ‎numerically and then are compared with experimental data. Numerical simulations have been ‎conducted using SEEP/W model which is based on the finite element method. Laboratory model of ‎the porous medium has 6.4m length, 0.8m width and 1m height. Crushed materials were used as ‎porous media. Modeling scenarios were conducted for different values of flow discharges and ‎three bed slopes of 0, 4 and 20.3 % and then flow profiles and discharges were computed and ‎compared with those provided form experimental. The results indicated that application of ‎SEEP/W model for simulating flow properties through coarse materials and rockfill structures do ‎not always present satisfactory outputs, wherein in most cases specifically in low slopes ‎underestimated subsurface water profiles ( seepage line) compared to observed profiles. Also ‎computed flow discharge give a different behavior depend on bed slope and kind of materials. The ‎results of numerical model showed a good agreement in steep slope comparing to low slopes. ‎ %U https://ijswr.ut.ac.ir/article_58340_a2c1f7798ac1a4915739c39323ff8898.pdf