Conclusions
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1.
A change in seepage flows through cracks depends on the temperature of the concrete in the upstream face of the dam and on a change of the UP level. The maximum occurs in February-March and the minimum in September–October.
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2.
A change in seepage through the intersectional joints is related mainly to a change of the UP level.
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3.
The total seepage through the cracks was 20 liters/sec in February 1976 and 7 liters/ sec in February 1977, i.e., it decreased by almost 2.5 times. Grouting the cracks in the spring of 1976 was the main cause of the reduction.
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4.
Physical leaching of lime occurred in all investigated cracks in 1976.
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Literature cited
P. I. Vasil'ev and A. M. Tsybin, “Second Coordinating Conference on Thermal Phenomena in Hydraulic Concrete Structures,” Gidrotekh. Stroit., No. 1 (1975).
M. B. Petrovskii, “Temperature regime and permeability of the concrete gravity dam of the Onda hydroelectric station,” in: Trans. of the Joint Conf. on Hydraulic Engineering [in Russian], No. 103 (1975).
Additional information
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 3, pp. 17–19, March, 1978.
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Shaikin, B.V., Ivanilova, T.N. Seepage through the concrete in the upstream face of the dam at the Ust-Ilim hydroelectric station. Hydrotechnical Construction 12, 240–243 (1978). https://doi.org/10.1007/BF02305564
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DOI: https://doi.org/10.1007/BF02305564