Rock mass modelling involves the application of numerical methods for the scientific analysis and prediction of the mechanical, hydraulic, and thermal behavior (THM) of a geological body in response to mining activities.
This process involves a wide range of investigations and rock mechanics predictions, including:
- Assessment of system stability in both static and dynamic terms,
- Verification and assessment of the hydraulic barrier integrity or
- Calculating the spread of fluids within damaged barrier areas based on the analysis of potential spread trajectories or using the pressure-driven percolation method.
- Safe dimensioning of underground cavities and load-bearing elements,
- Prediction of the convergence behavior of subsurface cavities,
- Analysis and prognosis of long-term safety and subsidence development,
- Investigations into the effectiveness of backfill,
- Long-term rock mechanical proof of function of tunnel and shaft closures,
- Investigation into the effectiveness of reinforcement elements such as rock bolts,
- Calculations for the dimensioning and rock-mechanically safe operation of storage caverns.
The IfG uses various program systems to investigate complex continuum and discontinuum mechanical problems using both plane, rotationally symmetric, and spatial models. High-performance multi-core processors of the latest generation are available for this purpose. In combination with CAD-based meshers and modern, higher-order material models, it is now possible to create realistic models that represent specific problems and calculate reliable predictions of future developments (including THM-coupled).
Constitutive models
The realistic description of material behavior forms the basis for geomechanical assessments.
Models from simple to complex
Depending on the task and available data, the IfG develops simple models through to realistic 3D representations of the geology and geometry.
Parameters: Validating and calibrating
Predictions are only as reliable as the underlying parameters.
Continuum and discontinuum
The structure of the separation surface can have a significant influence on the properties of the rock.
Research and development
The IfG develops material models and modeling methods and defines the state of the art.
