Numerical Calculations of the Consolidation of Flotation Waste Landfill “Zelazny Most” Based on Biot’s Model with the Kelvin - Voight Rheological Skeleton

Abstract

This paper presents simulation results of the consolidation process of the flotation waste landfill "Żelazny Most". The mathematical model used in presented research is based on Biot's model of consolidation and is extended with rheological skeleton. The load is the mass pressure of the landfill itself. The initial point selected for calculations was based on the ground water level calculated in a landfill. The creeping process in this waste landfill was analyzed along the north -south section. The solution is therefore 2D with the assumption of a plane strain state. Effective model parameters data were obtained in laboratory tests on the material from the waste landfill. Results obtained for a stress state in a storage state can help to determine whether the adopted linear model of visco-elastic medium does not lead to changes in the Coulomb -Mohr potential yield, showing the emergence of plasticity of material storage areas.

Building a Numerical Model of the Filtration Flow in the Żelazny Most Flotation Tailings Disposal Lake

“…The above case should be examined after the water infiltration possibility has been thoroughly investigated. The developed 3D numerical model of the filtration flow of water in the area of the Żelazny Most flotation tailings disposal lake differs from the models of this lake reported in the literature: Strzelecki and Bartlewska [6], Nowak et al [4], [5], in the fact that it incorporates the real system of subsoil strata under the lake and in the surrounding area. The numerical model is fully three-dimensional.…”

“…The numerical model is fully three-dimensional. Previously, either a 2D model with the solution of the Boussinesq equations (Nowak, Strzelecki M., Strzelecki T. [5]) or a 3D model with a geometrical model without the subsoil strata (Strzelecki and Bartlewska-Urban [6]), had been used. The lake's drainage, in the form of the drainage ditch and the draining systems within the lake area, was taken into account in the numerical computations.…”

Thermal consolidation of porous medium with a rheological kelvin–voigt skeleton

“…The viscosity of the soil skeleton in the creep process of this type of soils plays an important role, in addition to the volume and shape compressibility. This issue was described by Bartlewska [5] in her dissertation as well as by Bartlewska and Strzelecki in [6], [7], [27]. The effect of temperature field in the case of adiabatic processes in the deformation process of two-phase medium composed of elastic skeleton and weakly compressible fluid was described by Coussy.…”

Risk Reduction of a Terrorist Attack on a Critical Infrastructure Facility of LGOM Based on the Example of the Żelazny Most Tailings Storage Facility (OUOW Żelazny Most)

“…Therefore, the modeling of dynamic interactions may provide information that is necessary in the design process to recognize the existing hazards related to the stability of the landfill. Laboratory tests carried out on material taken from the landfill Żelazny Most (Bartlewska 2009, Strzelecki et al 2011 allowed the effective parameters of the model of Biot consolidation with the rheological skeleton to be determined. The obtained measurement results allowed a numerical model of consolidation of the Żelazny Most reservoir to be created and the process of its deformations over time to be analyzed.…”