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Discrete Fracture Network Modelling Software

Use more of what you know.

MoFrac is a software package developed at Mirarco mining innovation 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 geostatistical rules and constrained by data. The data can come from surface or underground mapping. 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. A team of geomechanics researchers and software developers at MIRARCO Mining Innovation is available forassisting with application and integration with flexible outputs or customization services.

  • Properties such as fracture intensity, orientation, truncation rules, size, shape and undulation are defined for each fracture group.
  • Versatile models allow for updates as projects progress in order to gain an actual representation of real geotechnical scenarios.
  • 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. Defined surfaces act as boundaries to model rock excavations.
  • 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:
    • Identification of continuous unfractured sub-volumes.
    • Built metrics plug-ins assess DFN models for constraints and agreeance with mapped data.
  • 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.

  • Stochastic constraints through different processes to best represent input data.

  • MoFrac DFNs can be used for a broad range of geomechanical modelling and hydraulic flow modelling applications.
    • Mine design
    • Rock characterization
    • Kinematic analysis of wedge failure
    • Blast optimization
    • Block size distributions for block caving operations
    • Fracture mechanics
    • Reservoir modelling
    • Contaminant transport
    • Hydraulic fracturing

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


For researchers at Canadian academic institutions, a MoFrac license may be granted at no charge.  Please contact us at mofrac@mirarco.org using your institutional email account.