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Seepage regime of the foundation of the Sayano-Shushenskoe dam during the first years of permanent operation

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Hydrotechnical Construction Aims and scope

Conclusions

  1. 1.

    The rock foundation of the Sayano-Shushenskoe dam is inhomogeneous in its seepage characteristics: individual stretches in zones of tectonic crushing of the rock are the most permeable.

  2. 2.

    The depth of opening of the rock-concrete contact does not exceed 27 m.

  3. 3.

    During 4 years each subsequent filling of the reservoir to the NPL intensified the degree of decompression of the foundation, involving the deep curtain in this process. Signs of cracking of the middle part of the grout curtain were detected.

It is necessary in the very near future to take measures to suppress seepage through the rock foundation.

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References

  1. L. I. Malyshev and V. G. Skokov, “Effectiveness of antiseepage and strengthening measures in the dam foundation during temporary operation of the Sayano-Shushenskoe hydrostation,” in: Solution of Problems of the Sayano-Shushenskoe Hydropower Complex: Proceedings of the Scientific-Technical Conference [in Russian] (1986).

  2. O. N. Nosova and O. G. Margolina, “Characteristics of the seepage regime of the foundation of the dam of the Sayano-Shushenskoe hydrostation during filling of the reservoir,” in: Solution of Problems of the Sayano-Shushenskoe Hydropower Complex: Proceedings of the Scientific-Technical Conference [in Russian] (1986).

  3. V. N. Badukhin and O. A. Lutsevich, “Prediction and actual state of the dam foundation,” in: Solution of Problems of the Sayano-Shushenskoe Hydropower Complex: Proceedings of the Scientific-Technical Conference [in Russian] (1986).

  4. A. D. Shusharin and L. S. Permyakova, “Results of on-site observations in the contact zone of the dam and foundation of the Sayano-Shushenskoe hydrostation,” Gidrotekh. Stroit., No. 10 (1991).

  5. M. V. Remenyak, “Seepage deformations in the foundation of the arch dam of the Inguri hydrostation,” Gidrotekh. Stroit., No. 11 (1992).

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Authors
  1. L. S. Permyakova
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  2. E. N. Reshetnikova
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  3. A. P. Epifanov
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Additional information

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 4, pp. 16–21, March, 1994.

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Permyakova, L.S., Reshetnikova, E.N. & Epifanov, A.P. Seepage regime of the foundation of the Sayano-Shushenskoe dam during the first years of permanent operation. Hydrotechnical Construction 28, 209–215 (1994). https://doi.org/10.1007/BF01545055

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  • DOI: https://doi.org/10.1007/BF01545055

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