Hydropower Resource Development of the San Juan River in Argentina
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Vol. 54, No. 3, September, 2020
HYDROPOWER RESOURCE DEVELOPMENT OF THE SAN JUAN RIVER IN ARGENTINA A. V. Kozyrev,1 A. V. Lashin,2 I. O. Uskov,2 and V. I. Uskov3 Translated from Gidrotekhnicheskoe Stroitel’stvo, No. 4, April 2020, pp. 45 – 54
This article discusses the design, organization of construction, installation and commissioning processes of the Los Caracoles and Punta Negra Hydro Power Plants (HPPs), as well as a plan for the development of the existing cascade of HPPs on the San Juan River in Argentina through the construction of the Tambolar HPP. Keywords: hydropower plant (HPP); Los Caracoles; Punta Negra; Tambolar; San Juan River; Argentina; organization of construction; cascade; installation; equipment; use of hydropower resources.
mented in whole or in part at the expense of the concession holder under state guarantees at the tariff for the purchase of electricity. Upon completion of construction, the concession holder reimburses its expenses from the sales profit of the electricity generated by the HPP, according to the tariff established in the concession agreement. The UTE consortium, which includes the construction company, Constructora ICA Argentina (a branch of the Mexican company ICA), and the Argentinean construction companies, Panedile Argentina and Comercial del Plata Construcciones, was involved as a contractor for the project. The turnkey construction contract cost was USD 186.3 million for the Los Caracoles HPP and USD 118.9 million for the Punta Negra HPP (1998 values). The share of the cost of technological equipment was approximately 20% of the total cost of construction, that is, USD 37.1 million and 25.7 million for the Los Caracoles and Punta Negra HPPs, respectively. The planned construction period was 4.5 years for Los Caracoles HPP and 4 years 2 months for Punta Negra HPP. The basic project in the amount of 25 volumes, tendered by the customer, required detailed study by the contractor. During the additional engineering and geological study of the structural sections and earth deposits of local building materials and the hydrological study of the river, crucial drawbacks in the basic design were revealed and thus required a revision of many technical solutions. The retaining structure of the Los Caracoles HPP is a rockfill dam with a height of 136 m and an embankment volume of approximately 10 million m3; the dam’s central impervious core is made of cohesive materials and construction cofferdams integrated into the dam body. However, engineering and geological exploration revealed the lack of material deposits near the construction site, suitable for placement in
In March 1998, the construction of the Los Caracoles (125 MW, 715 million kW · h) and Punta Negra (65 MW, 296 million kW · h) Hydro Power Plants (HPPs) was started along the San Juan River in Argentina. This construction complemented the cascade of the existing Uyum I-II (44 MW, 233 million kW · h) and Quebrada de Uyum (45 MW, 165 million kW · h) HPPs located downstream. The commissioning of new HPPs was necessary fo
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