Influence of permeability on the behaviour of tailings storage facilities by hydromechanical numerical analysis
Influence of permeability on the behaviour of tailings storage facilities by hydromechanical numerical analysis
Given the catastrophic accidents seen in the last decade at tailings storage facilities (TSF’s), there is a growing consensus that a better understanding of the behaviour of these structures is needed including different approaches to analyse their stability. In that sense, the use of numerical tools allowing coupled hydromechanical stress-strain analysis has been encouraged. This paper presents the results of PLAXIS 2D® numerical analysis conducted on a simple slope where the water head was increased in the upstream boundary and a seepage flow was established. A parametric study was developed for different slope heights, water heights, and soil permeability, where the minimum time required for a steady-state seepage flow stabilization was identified. A mathematical formulation is proposed that relates the normalized water height, the soil permeability, and the steady-state time.
C. Midao; Antonio Viana Da Fonseca; Sara Rios
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
C - Risk analysis and safety evaluation
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