Water spreading projects by controlling the floodwater, infiltrating to subsurface and recharging the groundwater, will result in a reliable source of water in dry seasons. In this study, an arid region in Ilam province of Iran was chosen and after careful evaluation, three water spreading projects, including mechanical and water structures, were selected to be executed in the area, and while estimating the discharge in each site using HEC-HMS model, the stability condition of the structures was studied using Geo-Slope software. Also, the stability and instability factors of the structures and dikes were analyzed in flood spreading systems using various methods at the end of construction, steady seepage, and rapid drawdown stages. Results showed that in both static and quasi-static stability analysis of downstream and upstream slopes of dikes based on the calculated safety factors compared to the allowed safety factor, the slopes of embankment dams in all three stages possess the required safety factor.

中文翻译：

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伊朗干旱地区洪水传播系统的稳定性分析

通过控制洪水、渗入地下和回灌地下水的撒水工程将在旱季提供可靠的水源。本研究选择伊朗伊拉姆省的一个干旱地区，经过仔细评估，选择在该地区实施包括机械和水结构在内的三个撒水项目，同时使用 HEC 估算每个站点的排放量 - HMS模型，利用Geo-Slope软件研究了结构的稳定性情况。此外，在施工结束、稳定渗流和快速下降阶段，使用各种方法分析了洪水扩散系统中结构和堤坝的稳定性和失稳因素。