Evaluation and comparison of parameters due to failure of Ghare Aghach dam using Froehlich method and BREACH model

Subject Areas : hydraulic structures

Sayyed Ali Shahrezaie ¹ , Mahdi Radfa ² , Elham Ghanbari Adivi ³

1 - Department of Water Science and Engineering - Water Resources, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran.
2 - Department of Water Science and Engineering - Faculty of Agriculture, Shahrekord University, Shahrekord, Iran.
3 - Department of Water Science and Engineering - Faculty of Agriculture, Shahrekord University, Shahrekord, Iran.

Received: 2021-05-11 Accepted : 2021-07-08 Published : 2021-05-22

Keywords: Dam failure, parameters due to dam failure, Froehlich method, BREACH model,

Abstract :

The dam, like other man-made structures, may fail and cause extensive damage. In the present study, the parameters resulting from the failure of Ghare Aghach dam have been evaluated. The results showed that with the Froehlich method and the failure of the peak flow overtopping type equivalent to 9170.4 cubic meters per second, the failure of the peak flow piping type will be equal to 2383.4 cubic meters per second. With the BREACH model and the failure of the overtopping type, the peak flow is equal to 15654.7 cubic meters per second and if the failure is of the piping type, the peak flow will be equal to 1722.3 cubic meters per second. Although the BREACH model is more accurate, However, considering that the peak flow obtained by Froehlich method is 0.9792 with the peak flow observed from the BREACH model, so it has acceptable accuracy. Failure of the overtopping dam compared to the leakage condition at the level of 2444 from the dam body has a higher peak flow and will lead to financial losses as well as more casualties in the downstream area of the dam.