Non-homogeneous embankment dams overtopping breach: Experimental study of flow level variations and reservoir sediment movement

Articles in Press

Document Type : Research Paper

Authors

1 Department of Civil Engineering, Faculty of Engineering, Urmia University, Urmia, Iran.

2 Department of Civil Engineering, Faculty of Engineering, Imam Ali University, Tehran, Iran.

10.22055/jhs.2024.47610.1315

Abstract

The overtopping phenomenon is the most probable reason for embankment dams’ failure. It includes an intricate process; hence its experimental investigation is a remarkable subject. In current research work, two experiments have been conducted at the hydraulics laboratory of the Iranian Energy Ministry Water Research Institute. The changes of reservoir water level, and downstream sedimentary flow level were measured in the first experiment. The first experiment results represented in three stages, i.e., initiation, development, and termination. In case of initiation, the water level rise observed 6% in reservoir. In the development stage, the variation rate of reservoir water level was two times of the termination stage. In the second experiment, the reservoir sediment modeling was performed. When the second experiment finished, about 10% of reservoir sediment was transported downstream. Besides that, the average eroded material thickness was increased, it proved the effect of the reservoir sediment movement. This article comprises calculation of the volume and mass of the eroded material in two practical experiments. The current research helps researchers to achieve the new insight on breach results of embankment dams.

Keywords

Main Subjects

References

  1. https://www.icoldchile.cl/boletines/188.pdf
  2. https://damsafety.org.
  3. Morris, M., & Hassan, M. (2005). IMPACT: Investigation of extreme flood processes and uncertainty-a European research project.
  4. Pugh, C. A. (2008). Sediment transport scaling for physical models. In Sedimentation engineering: Processes, measurements, modeling, and practice (pp. 1057-1065).
  5. Hanson, G. J., Wahl, T., Temple, D., Hunt, S., & Tejral, R. (2010). Erodibility characteristics of embankment materials. Paper presented at the Proc., ASDSO 2010 Annual Conf., Agriculture Research Service, US Dept. of Agriculture, Washington, DC.
  6. Al-Riffai, M. (2014). Experimental study of breach mechanics in overtopped noncohesive earthen embankments. Université d'Ottawa/University of Ottawa.
  7. Froehlich, D. C. (2016). Predicting peak discharge from gradually breached embankment dam. Journal of Hydrologic Engineering, 21(11), 04016041.
  8. Mohamed, M. M. A., & El-Ghorab, E. A. S. (2016). Investigating scale effects on breach evolution of overtopped sand embankments. Water Science, 30(2), 84-95.
  9. Msadala, V. P. (2016). Sediment transport dynamics in dam-break modelling. Stellenbosch: Stellenbosch University.
  10. Saberi, O. (2016). Embankment dam failure outflow hydrograph development. Graz University of Technology.
  11. https://www.energiforsk.se
  12. Sadeghi, S., Hakimzadeh, H., & Babaeian Amini, A. (2020). Experimental investigation into outflow hydrographs of nonhomogeneous earth dam breaching due to overtopping. Journal of Hydraulic Engineering, 146(1), 04019049.
  13. Desta, H., & Belayneh, M. (2021). Dam breach analysis: a case of Gidabo dam, Southern Ethiopia. International Journal of Environmental Science and Technology, 18(1), 107-122.
  14. Ahadiyan, J., Bahmanpouri, F., Adeli, A., Gualtieri, C., & Khoshkonesh, A. (2022). Riprap effect on hydraulic fracturing process of cohesive and non-cohesive protective levees. Water Resources Management, 36(2), 625-639.
  15. Taskaya, E., Bombar, G., & Tayfur, G. (2023). Experimental investigation of sediment movement as a result of homogeneous earth-fill dam overtopping break over a simplified urban area. Journal of Hydrology, 617, 128924.
  16. Gee, G. W., & Or, D. (2002). 2.4 Particle‐size analysis. Methods of soil analysis: Part 4 physical methods, 5, 255-293.
  17. Standard, A. (2007). D698. Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort. ASTM International, West Conshohocken, PA.
  18. ASTM D 3080 (2004) Standard test method for direct shear test of soils under consolidated drained conditions. American Society for Testing and Materials, W.C.
  19. Brontowiyono, W., Hammid, A. T., Jebur, Y. M., Al-Sudani, A. Q., Mutlak, D. A., & Parvan, M. (2022). Reduction of seepage risks by investigation into different lengths and positions for cutoff wall and horizontal drainage (Case study: Sattarkhan Dam). Advances in Civil Engineering, 2022(1), 6441646.
  20. USACE, G. D. (2004). Construction Considerations for Earth and Rock-Fill Dams. US Army Corps of Engineers.
  21. Reclamation, U. B. O. (1987). Design of small dams. Water Resources Technical Publication, 860p.
Journal of Hydraulic Structures

Articles in Press, Accepted Manuscript
Available Online from 10 November 2024

Files

Share

How to cite

Statistics