Filtration calculations of the earth dam of the Yumaguzinsky hydroelectric complex

Abstract

The earth dam was built in 2005 as part of the Yumaguzinsky hydroelectric complex on the Belaya River in Bashkortostan. The results of numerical filtration calculations of a stone-earth dam based on the use of the equation of unsteady filtration under specified boundary conditions are presented; to evaluate the effectiveness of anti-filtration devices both in the body and at the base of an earth dam. Numerical solutions were obtained using the “FILTR” calculation program developed by specialists of the Department of Hydraulics and Hydraulic Engineering of the National Research Moscow State University of Civil Engineering to solve problems of nonlinear pressure-free filtration in an inhomogeneous environment. The applied algorithm is based on two numerical methods: finite elements and local variations. The article examines and discusses both theoretical provisions and practical results obtained during the solution of the filtration problem using the “FILTR” program for several design solutions for anti-filtration devices in the body of the Yumaguzinsky earth dam. Studies have shown that the structures of anti-filtration devices both in the body of the earth dam and at the base of the structure have demonstrated satisfactory performance.