LowRiskDT
Project
Overall
Structure of the Project
WP1.
Definition of reference cases of mine repositories
The formulation of the cases is based on a survey of suitable mines in Europe.
Hydraulic conditions, rock structure and stresses are simulated based on typical
recorded data.
WP2. Survey and characterisation of waste isolation materials
Clay-based
(smectitic) embedment of waste packages and clay
materials for backfilling purposes are considered.
The hydraulic conductivity and ion diffusivity as
well as rheological properties of these barriers
are defined on the basis of very comprehensive experience.
The data will be used for calculation of the integrated
performance of the repository with respect to transport
of dissolved hazardeous ion species. Techniques for
preparation, design manufacturing and application
of waste embedments are defined and proposed.
WP3. Chemical conditions
The pH
situation and solubility of typical hazardeous waste
products are investigated and defined for the nearfield,
i.e. the porewater of the waste-embedding clay. This
data is used in estimating the concentration of dissolved
species, i.e. the source term, which is the basis
for predicting the concentration of released contaminants
in the farfield environment.
WP4. Numerical modeling of the performance of mine repositories
Calculations
are made of the isolating capacity of reference repositories
in terms of the concentration of hazardeous ion species
in the farfield environment, considering rock stability
issue. Relevant flow and diffusion models available
to the participants from their previous research
work are adapted and applied to the reference cases
representing different rock structures and flow path
patterns.
For further information on this project, please contact info beasy.com with "LowRiskDT" as
the subject heading.
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