Monitoring the concrete-rock contact seam behavior fromthe upstream dam face to ensure the safety of Boguchany concrete dam

Vestnik MGSU 7/2013
  • Vavilova Vera Konstantinovna - TsSGNEO Branch of JSC Institute Hydroproject named after S.Y. Zhuk +7 (495) 158-06-79, TsSGNEO Branch of JSC Institute Hydroproject named after S.Y. Zhuk, 2 Volokolamskoe shosse, Moscow, 125993, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Yur’ev Sergey Vladimirovich - JSC Institute Hydroproject named after S.Y. Zhuk Chief Design Engineer, JSC Institute Hydroproject named after S.Y. Zhuk, 2 Volokolamskoe shosse, Moscow, 125993, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 157-166

The authors argue that the attention of designers of concrete dams shall be focused on the concrete dam — rock foundation contact zone. The study of the exposure to the rock mass tensile strength in case of the concrete dam sliding is a relevant problem; its resolution may improve the operation of the whole hydraulic engineering structure. The method of selecting the dam safety criteria based on the field test data and laboratory reservoir impoundment observations is a relevant topic for discussion. If the strength margin value is in place, Russian regulations permit the tensile strength break along the concrete - rock contact line.The team led by Yu. A. Fishman and S.Yu. Roza has for a long time been researching into the problem of the limit state of rock foundations of concrete gravity dams. The study of the rock foundation failure, if exposed to horizontal and vertical loads, was also performed by VNIIG (Vedeneev All-Russian Scientific Research Institute of Hydraulic Engineering) and MGSU (Moscow State University of Civil Engineering). Both institutions have discovered that particular attention should be paid to the methodology of identification of shear strength parameters for the analysis of the first limit state to assess the reliability of the concrete dam foundation.The construction of Boguchany HPP plant is close to completion in the KrasnoyarskTerritory. The initial impoundment of the Boguchany reservoir was commenced in April,2012. According to the rock foundation monitoring data, it can be assumed that the behavior of the contact zone exposed to the shear load is in compliance with the pre-set parameters, and it needs further studies to accompany the water level rise. The foundation monitoring data collected in the course of the experiment will let the authors study the behavior of the Boguchany dam to verify the behavior of the dam-rock contact zone exposed to the real conditions of the reservoir impoundment.In the future, the results of these studies will make it possible to establish more precise criteria for the concrete-rock contact zone of the Boguchany dam project.

DOI: 10.22227/1997-0935.2013.7.157-166

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