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Water-operated guard gate of a deep intake

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Hydrotechnical Construction Aims and scope

Conclusions

  1. 1.

    The water-operated gate of the proposed design eliminates the construction of a reinforced-concrete tower above a deep water intake.

  2. 2.

    The water-operated guard gate of the proposed design provides closing of the inlet opening fo the deep intake, namely, after opening the valve (in response to a command from the pontoon) and filling the tunnel with water, the gate surfaces.

  3. 3.

    This gate can cover openings located at any depth. The maximum depth is limited by the head for which the gate was designed.

  4. 4.

    Drawdown of the reservoir to the dead storage level is not necessary for closing the inlet opening. This permits more complete use of the river runoff during the years and, if necessary, conducting preventive maintenance and repairs also in the summer.

Full-scale tests of the water-operated guard gate of the Dangara tunnel in 1990 showed that the above-described gate design is operable. The tests were conducted at a head above the sill of 6.8 m with a difference between the buoyant force and force of gravity of 0.4 ton.

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Literature cited

  1. Specifications and Standards. Deep Outlets of Hydro Developments [in Russian], VSN 38-70, Minenergo SSSR (1972).

  2. P. S. Neporosnyi (ed.), Hydraulic Structures of Multipurpose Hydro Developments [in Russian], Energiya, Moscow (1973).

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  3. N. I. Donskikh and O. N. Smirnov, “Hollow guard gate for a deep intake,” in: Proceedings of the All-Union Planning, Surveying and Scientific-Research Institute. Progressive Solutions in the Design and Performance of Special Hydrotechnical Works [in Russian] (1979).

  4. “Deep tower water intake of a hydroelectric-pumped-storage station,” Ekspress Inf. VINITI, Gidroenergetika, No. 21 (1968).

  5. “Water-operated guard gate at a hydro development,” Ekspress Inf. VINITI, No. 30 (1976).

  6. B. M. Volodin, N. I. Donskikh, and D. A. Furta, Author's Certificate 594240, “Gate for a hydraulic structure,” Otkr. Izobr., No. 7 (1978).

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Authors
  1. Yu. S. Odinets
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Additional information

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 1, pp. 32–34, January, 1991.

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Odinets, Y.S. Water-operated guard gate of a deep intake. Hydrotechnical Construction 25, 25–29 (1991). https://doi.org/10.1007/BF01428133

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  • DOI: https://doi.org/10.1007/BF01428133

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