Projekt

Investigations of tailing behaviour using higher degree material models

In this project a simple model of an upstream tailing facility will be created in order to simulate the effect of further filling on top of an existing dam. The investigation and judgement of the stability of tailing storage facilities should be supported by numerical methods, which should allow the representation of the behaviour of both rockfill embankments and the enclosed and stored tailings.

Unlike previous studies, higher order material models will be used to allow for effect simulation within a fully coupled analysis. This analysis should be based on a realistic representation of the tailing materials. The main part of the project will be carried out through a a combination of fully coupled numerical analyses and laboratory investigations.

This type of material models, UBC Sand or PM4S, are based on models used for dynamic analysis of earthquakes and liquefaction phenomena. Therefore, the input parameters need to be determined. To do this laboratory investigations will be conducted on tailing materials under cyclic and dynamic conditions.

The main objectives are to:

  • Determine static and dynamic material parameters as input parameters for higher order material models
  • Conduct advanced numerical modelling on a simplified virtual upstream built tailing storage faclity.

A systematic modelling of tailing facilities will allow better prognosis for future activities especially when calibrated to in situ measurement. With this test result a simplified tailing facility will be modelled in order to simulate the filling procedure and the further raise of a dam.

Om projektet

Tid

januari 2020 - december 2020