Abstract
The current study is designed to analyze theslope stability of Haditha damwhich is an earth-fill dam constructed on the Euphrates River in the middle-west of Iraq. Finite element modeling was used in the present study to analyze the combined seepage and post-earthquake slope stability of Haditha earth dam. The maximum water level of a steady seepage case was considered to evaluate seepage. - Three different water levels (maximum, normal, and minimum) were applied, and nine different equilibrium slope stability limits were used to analyze the upstream and downstream slopes of the dam with three horizontal maximum accelerations.The input data given to the software are the dam geometry and its material properties with the earthquake records in the year2019.The dam was investigated by considering the water in the reservoir to be at maximum, minimum and normal water levels in its actual design. It was concluded that the dam is on the safe side in terms of stability even though the change in the earthquake's conditions in Iraq.
Highlights
Any dam failure or accident to dam can cause a potential hazard to property and lives of millions of people who dwell downstream of the dam and other live stock
It was concluded that the main source of the seepage at the first site is a leakage of reservoir water
Salih[2]studied the performance of the right side of Haditha Dam.After the second stage of filling the dam reservoir to the level of 129 m, the problem of leakage appeared on the right side and with a drainage ranging from (13 to 15) l/s. This problem has been studied and analyzed in order to evaluate the efficiency of the asphaltic concrete barrier and the grout curtain, depending on the field information monitored by the researcher and the information obtained from the maintenance and operation department ofHaditha dam
Summary
Any dam failure or accident to dam can cause a potential hazard to property and lives of millions of people who dwell downstream of the dam and other live stock. Khassa Chai Dam (Iraq), which is located on the Khassa Chai River, is considered a case study.It was concluded that at the base of the core, the value of the pore water pressure produced is greater than that of the upper dam sections.Elasaad, et al [7] studied the effect of earthquakes on the stability of AL-Basel dam on Al-Abrash River in Tartous city in Syria with an analytical study by Finite Element Method They have set a numerical model suitable by using Slope/W and Quake/W software. The main target of the research is to check the safety of post-earthquake slope stability of Haditha dam after the change in seismic conditions in Iraq in recent years by using GeoStudio software with its subprograms SEEP/W, SLOPE/W,and QUAKE/W
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