Experimental and numerical study of upstream slope stability in an earth dam reservoir under rapid drawdown conditions

Authors

  • Seyed Habib Mousavi Jahromi Islamic Azad University
  • Mansour Pakmanesh Islamic Azad University
  • Amir Khosrojerdi Islamic Azad University
  • Hossein Hassanpour Darvishi Islamic Azad University
  • Hossein Babazadeh Islamic Azad University

DOI:

https://doi.org/10.15649/2346075X.1006

Keywords:

Slope Stability, rapid ‎drawdown, earth dam, drainage prediction, seep/w

Abstract

The rapid ‎drawdown of the dam reservoir is one of the most common situations occurring in the lifetime of a dam. For this reason, one of the main factors in the design of the upstream slope is the rapid drainage of the reservoir. In this case, the upstream slope is in a critical condition and the slope may be unstable. When the water surface in the reservoir is drawdown suddenly, the water level in the dam body does not decrease at the same time as the reservoir water level. The analysis of seepage from the earth dam body and calculation of the water loss play an important role in calculating the amount of pore water pressure, and, consequently, the stability analysis of the dam body. In addition, any seepage analysis is dependent on the hydraulic properties of the dam materials. In order to investigate the effect of hydraulic conductivity on the rapid drawdown of water level and the seepage, an experimental model was constructed of an earth dam. By accurate measurement of hydraulic parameters of the materials in saturated and unsaturated media, the flow through this model was modeled using a disk penetrometer by seep/w software. The results were then compared with the observed data.

Author Biographies

  • Seyed Habib Mousavi Jahromi, Islamic Azad University

    Professor, Department of Water Science and Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

  • Mansour Pakmanesh, Islamic Azad University

    PhD Student, Department of Water Science and Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

  • Amir Khosrojerdi, Islamic Azad University

    Assistant Professor, Department of Water Science and Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

  • Hossein Hassanpour Darvishi, Islamic Azad University

    Associate Professor, Department of Civil Engineering - Engineering and Managment of Water Resources, Islamic Azad University, Shahr-e-Qods Branch, Tehran, Iran

  • Hossein Babazadeh, Islamic Azad University

    Associate Professor, Department of Water Science and Engineering, Science and Research Branch, Islamic Azad University Tehran, Iran

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Issue

Vol. 8 No. 1 (2020)

Section

Original research and innovation article

Published

2020-12-01

How to Cite

Mousavi Jahromi, S. H., Pakmanesh, M., Khosrojerdi, A., Hassanpour Darvishi, H., & Babazadeh, H. (2020). Experimental and numerical study of upstream slope stability in an earth dam reservoir under rapid drawdown conditions. Innovaciencia, 8(1), 1-15. https://doi.org/10.15649/2346075X.1006

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