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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

RESULTS OF THE RESEARCH OF THE EARTH-FILLED OVERFLOW DAM WITH A CURVING AND STEP-SHAPED DOWNSTREAM SECTION

Vestnik MGSU 2/2012
  • Bal'zannikov Mihail Ivanovich - Samara State University of Architecture and Civil Engineering Doctor of Technical Sciences, Professor, Head of Department of Nature Protection and Hydraulic Engineering Structures, Rector 8 (846) 242-17-84, Samara State University of Architecture and Civil Engineering, 194 Molodogvardejskaja St., Samara, Russia.
  • Rodionov Maksim Vladimirovich - Samara State University of Architecture and Civil Engineering Assistant Lecturer, Department of Nature Protection and Hydraulic Engineering Structures 8 (846) 242-21-71, Samara State University of Architecture and Civil Engineering, 194 Molodogvardejskaja St., Samara, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 67 - 76

Results of the model hydraulic research of the earth-filled overflow dam designed by the authors of this article are presented in the paper. The efficiency of the suppression of excessive kinetic energy of the discharged flow within the downstream section is also assessed in the proposed manuscript.
The potential efficiency of earth-filled dams with a downstream section giving way to floodwaters is also provided. The article presents the characteristics of structural elements applied to connect the downstream section of a dam, including its low cost, fast and simple installation and de-installation, problem-free repair and re-use of connection elements.
The pilot structure of the earth-filled overflow water-retraining structure has been designed. It is noteworthy for geosynthetic shells used to connect the downstream section. The downstream section is curving and step-shaped. Its strengths include the low cost of its connection due to the application of relatively inexpensive geosynthetic shells, the use of local construction materials to fill the shells in question, and lower labor intensity of its installation due to the use of high-capacity machinery.
The article also presents the results of the hydraulic research of the pilot model of the proposed structure. The research has proven that the suppression of any excessive kinetic energy of the discharged water flows falling onto the step-shaped and curving section or the step-shaped section the shape of which is similar to the one made of geosynthetic shells is more efficient that the suppression provided by the smooth section by 50 % to 60 %, and the above suppression is almost equal to the one provided by the well-known step-shaped section. This conclusion can serve as the proof of the high rate of energy suppression demonstrated by the earth-filled dam designed at Samara University of Architecture and Civil Engineering. The dam in question has geosynthetic shells that connect the downstream section to the body of the dam.

DOI: 10.22227/1997-0935.2012.2.67 - 76

References
  1. Pravdivec Ju.P. Tehniko-jekonomicheskoe obosnovanie stroitel'stva gruntovyh vodo-slivnyh plotin [Feasibility Study of Construction of Earth-filled Spillway Dams]. Jenergeticheskoe stroitel'stvo [Construction of Power Generating Facilities], 1982, Issue # 10, pp. 40—44.
  2. Balzannikov M.I, Rodionov M.V. Patent for Invention RF 2432432, IPC E02B7/06 Earth-filled Overflow Dam. Application # 2010126843, published in 2011, Bulletin # 30.
  3. Levi I.I. Modelirovanie gidravlicheskih javlenij [Modeling of Hydraulic Phenomena]. Leningrad, Jenergija, 1967, 236 p.
  4. Rodionov M.V. Issledovanija perelivnogo gruntovogo vodopodpornogo sooruzhenija s nizovoj gran'ju iz geosinteticheskih obolochek [Research of the Overflow Water Retraining Structure with a Downstream Section Made of Geosynthetic Shells]. Construction as Formation of the Environment, 14th International Conference, collection of works, pp. 684—693.

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