Grasselli’s Geomechanics Group at the University of Toronto examines underground rock mechanics, with special attention on how this research can be applied to the oil and gas industry.
One of the central projects the group is working on is modeling hydraulic fracturing, which is a hydro-mechanical process. Hydraulic fracturing has become an important part of the mining and petroleum industry, and as a result, it is an vital area of research for the group.
Most of the projects are a combination of numerical modeling and experimental tests to verify numerical results. All the available software has limitations and simplifies the data in a way that not realistically represent the hydro-mechanical interaction. As a result, another focus of the group is to develop software to model this hydro-mechanical process more realistically and develop a better understanding of mechanical deformation and fluid flow in rocks.Learn more
The x-ray tomography and multi-scale material characterization facility at the University of Toronto provides users with a unique combination of equipment for imaging internal structure of samples under a combination of environmental and loading conditions.Available equipment:
- Phoenix v|tome x|ray micro-Computer Tomography (CT)
- Phoenix nano|tome x|ray nano-CT
- PMI mercury intrusion porosimeter
- ERDμ-Q and ERDμ-T custom-made x-ray-transparent testing vessels
- Nanovea integrated micro- nano- indenter and scratcher
- ATOS II 3D surface scanner
Grasselli’s Geomechanics Group is doing extensive research in the field of numerical modeling of rock mechanics / mining problems using the combined finite-discrete element method (FDEM). This includes modeling a wide variety of problems ranging from laboratory-scale tests, e.g., Brazilian disc test and triaxial tests, to block caving, toppling, block fall, etc.
To make the 2D version of the FDEM code more user-friendly a Graphical User-Interface (GUI) was developed by Omid K. Mahabadi
Support for Y-GUI and Y-GEO has been discontinued. We currently Irazu for FDEM modelling. This is an improved commercial version developed by Geomechanica Inc.Learn more