Strength Evaluation of the Charvak Earth Dam in a Plane Formulation

Salyamova K.  D; Turdikulov Kh.  Kh

doi:10.47494/mesb.2021.18.909

(1) Salyamova K. D Doctor of Technical Sciences, Professor, Institute of Mechanics and Seismic Stability of Structures of the Academy of Sciences of the Republic of Uzbekistan
Uzbekistan
(2) Turdikulov Kh. Kh Ph.D., Head of Department, Fergana Polytechnic Institute, Fergana, Uzbekistan
Uzbekistan
(*) Corresponding Author

DOI:

https://doi.org/10.47494/mesb.2021.18.909

Keywords:

finite element method, stresses, displacements, pore pressure, earth dam of the Charvak HPP

Abstract

Currently, the Republic of Uzbekistan is undergoing rapid development in the sphere of the hydropower complex. In the next five years, it is planned to commission more than 20 HPPs of large and small capacity; the water retaining structure of which are the earth dams. The reliable and safe operation of earth dams, especially in the seismic regions of the republic, requires designers and researchers to constantly improve the design normative methods for their calculation in order to identify safety margins and stability under various kinds of loads. The aim of the study is to develop a method for calculating the stress state of an earth dam of the Charvak HPP (in a plane elastic formulation) under loads, taking into account the levels of the reservoir filling. Structural and piecewise inhomogeneous physical and mechanical characteristics of the structure body soil were provided by the design organization. The developed methods made it possible to compare the calculation results - kinematic characteristics (displacements, settlements, stresses, pore pressure) with long-term data of field observations. To predict the state of a structure under certain loads for safe operation in accordance with the standards, it is necessary to identify the stress-strain state of the most vulnerable areas. This problem was solved by the numerical finite element method. In accordance with the developed technique, the considered statics problem was reduced to solving a system of linear equations with respect to the sought-for displacements.

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