Studying the filtration mode of large dams’ foundations on mathematical models
The essential issue of engineering safety of high dams is substantiation of the seepage conditions of the dam - foundation system. In most cases, a violation of the filtration mode leads to disruption of the hydraulic structure. The authors analyzed the methods of mathematical simulation of a filtration mode for large dams’ foundations basing on finite element method. Up-to-date computational capability permits solving seepage problems in 3D transient formulation. The possible reasons for filtration mode disturbance in foundations of large dams are observed, as well as the corresponding methods of analytical forecasting for the parameters of inappropriate development of filtration processes. Application of the universal industrial-strength software complexes makes it possible to combine on a single software platform the seepage modeling with other methods of design-basis validation of hydraulic structures, such as computations of stress-strain state, strength and stability of the dam - foundation system. The analysis results should be further used in the calculation of the stress strain state of the structures.