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Effect of geodynamics on the reliability of the dam behind the Chirkey hydroelectric power plant

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Hydrotechnical Construction Aims and scope

Conclusions

  1. 1.

    The unique arch dam of the Chirkey hydroelectric power plant is operating under difficult conditions of high natural and excited seismicity under a geodynamic load from the left bank, which is not well defined. Reliable design solutions and the safety factor of the concrete have permitted its reliable operation to date.

  2. 2.

    The rock mass enclosing the dam exhibits appreciably lower reliability. The clay interlayers contained in the rock and the pattern of dislocation lower the shear strength under the influence of saturation, changes in the upper-pool level, and repeated earthquakes. The safety of the hydraulic facility is determined by the stability of the “laft-bank/dam/right-bank” system under left-bank creep caused by the gravitational imbalance of the site.

  3. 3.

    To retain the proper level of reliability and safety of the Chirkey hydroelectric power plant, it is necessary to perform check geomechanical calculations and organize state-of-art monitoring of geodynamic processes and an earthquake-forecasting service.

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References

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Authors
  1. A. N. Marchuk
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  2. M. Sh. Misrikhanov
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  3. A. R. Abakarov
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  4. Sh. M. Ganibalov
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  5. T. Yu. Krat
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Additional information

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 5, pp. 30–35, May, 1994.

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Marchuk, A.N., Misrikhanov, M.S., Abakarov, A.R. et al. Effect of geodynamics on the reliability of the dam behind the Chirkey hydroelectric power plant. Hydrotechnical Construction 28, 273–280 (1994). https://doi.org/10.1007/BF01545608

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  • DOI: https://doi.org/10.1007/BF01545608

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