چكيده به لاتين
Dams are always considered as important and infrastructure structures and they have vital value in many areas, especially in the vicinity of big cities. Although in the past, the overflowing phenomenon was the main cause of the destruction of dams, but nowadays, with the increase of the flood design period, it is the main problem that The phenomenon of seepage in earthen dams has attracted the attention of engineers. Darudzen dam is one of the important dams of Fars province, which is facing the problem of seepage. In this thesis, by using Seep/w software, it has been tried to increase the accuracy of the output of the software, the state of water leakage and the performance of control structures by considering the number of high sections. The seepage effect of the dam should be investigated and also by modeling different lengths for the Droodzen dam watertight curtain, its effect on the outflow from the body and foundation of the dam has been investigated.