Discrete Fracture Network Modelling Software

Use more of what you know.

MoFrac is a newly released software package that generates 3D fracture network models for rock mass characterization.

Driven by the need for safer geotechnical design, MoFrac implements methods developed by R. Mohan Srivastava to create DFNs well-suited to both civil and mining applications.


Using more of what we know

Aligned with the philosophy of ‘using more of what we know’, MoFrac models are guided by rules and constrained by data. The rules come from geology, geostatistics and geotechnical considerations. The data can come from surface or underground mapping, remote sensing, core logging and/or borehole imaging tools. MoFrac models can range from the metre scale typical of underground tunnels and pillars, to the kilometre scale of regional studies supported by aerial photography. DFNs generated by MoFrac have been validated in case studies using field observations.

Benefits and Features

Geomechanical Analysis and Research

MoFrac is an extensible platform for geotechnical engineers and researchers. Users can integrate MoFrac with their custom or commercial software applications using the Python scripting language. A team of geomechanics researchers and software developers at MIRARCO Mining Innovation is available for
assisting with application, integration or customization of the software.

  • Properties such as fracture intensity, orientation, truncation rules, size, shape and undulation are defined for each fracture group.
  • Field data, such as mapped fracture traces and borehole data, constrain where fractures occur and where they may not occur.
  • Subregions can be defined with localized fracture group properties.  
  • A single fracture may connect multiple traces. This joining behaviour can arise from geometric inference or from explicit constraints.
  • Several analyses of completed fracture networks can be carried out:
    • Inspection of fracture network connectivity. For example, the user may specify an arbitrary volume and obtain the connected fracture network.
    • Identification of continuous unfractured sub-volumes.
    • Aggregation of data and statistics across multiple fracture network realizations.
  • For advanced users, custom fracture group properties can be governed by plug-ins, allowing for control over distributions and strategies for intensity, orientation and undulation.

  • MoFrac DFNs can be used for a broad range of geomechanical modelling and hydraulic flow modelling applications.
    • Open pit slope stability
    • Kinematic analysis of wedge failure
    • Stope fragmentation assessment
    • Block size distributions for block caving operations
    • Improved assessment of shear behaviour in rough discontinuities
    • Reservoir modelling
    • Contaminant transport
    • Hydraulic fracturing

Extended FREE Trial!

Sign up on our issue tracker to be a beta tester and receive an extended free trial*.

Slope stability
Fragmentation assessment
Block size distributions
Shear behaviour
Reservoir modeling
Contaminant transport
Hydraulic fracturing

*Extended Free Trial period until March 2019.

MIRARCO gratefully acknowledges the support of the NWMO, CEMI, SKB & Rio Tinto, and the collaboration of the University of Waterloo, Queen’s University and the University of Alberta.