Solve for any time increment or for the entirety of the draw schedule

Drawpoint layout design

Caveability and caving rate

Air gap formation

Isolated movement zone (IMZ) and isolated extracted zone (IEZ) limits

Movement of caved material within the IMZ

Marker path tracing (displacement/day or extraction status)

Marker velocity vectors

Tonnage, ore recovery, and dilution entry

Primary and secondary fragmentation

Fines migration

Breakthrough timing and surface subsidence

Incorporate previously mined regions

Abutment stresses and cave loads when coupled to FLAC3D or 3DEC

Simply driven by four input data files:
• Mine block model of rock
• Drawpoint locations
• Drawpoint descriptions (conical or rectangular draw bells or sublevel cave draw points)
• Draw periods/schedule

Use a Wizard to import the input CSV files, specify model settings, and automatically generate the simulation data file commands to run uncoupled flow models

User interface makes it easy to tile plots, data files, and tool panes to work with and explore your simulation

Features an intuitive interface, offering easy navigation and seamless access to essential tools and features

Provides users with flexible commands and scripting options, saving time and boosting productivity

Data presented in a clear, understandable manner contributes to well-informed decision making

Promotes collaboration among multidisciplinary teams, facilitating effective communication and cooperation

Optimized flow marker search and sorting algorithms

For efficient modeling, markers are only created once the rock mass becomes unbulked

Multi-threaded FISH Lists and Operators to query or modify the model incredibly quickly, even while cycling

Advanced plotting tools to understand your model results and for working with hundreds of plots on real projects

FISH, ITASCA’s scripting language, provides unparalleled control and customization of the model

Built-in Python 3.10 scripting includes SciPy for plotting, NumPy for computing, and Pyside for UI customization

Most model changes (via mouse, commands, or scripting) are recorded for repeatability, learning, and re-use

Highly customizable user interface (UI) and modeling

All licenses permit two instances of MassFlow to be run simultaneously on the same computer

Access and modify almost all variables (including customizable “EXTRA” variables) via FISH or Python

Import and export any ASCII data format

NEW Gravitational Rock Flow
• Gravitational rock flow modeling: Simulates the movement of rock outside the caving zone.
• Open-pit subsidence: Models subsidence during and after transitions to underground mining.
• Air gap and abandoned area collapse: Simulates the collapse of these features in underground operations.
• Rilling and Collapse behaviors: Utilizes these behaviors to model gravitational rock flow.
• Insights into mining environments: Provides valuable information on stability and dynamics.

New Constitutive Model Curved Mohr-Coulomb

The new Curved Mohr-Coulomb model offers efficiency and flexibility with a nonlinear failure envelope using three parameters or custom curves, supporting linear, bilinear, Hoek-Brown, and Griffith laws—perfect for automatic factor of safety calculations.

LEARN MORE

New Constitutive Model Synthetic Microseismicity

Now calculate accumulated plastic strain tensors to extract synthetic seismic magnitudes and moment tensors!

LEARN MORE

And More!

• New Scripting, ZONE FIELD DATA
• New AI Assistant, ask product questions and receive expert answers including suggested scripts
• Performance Enhancement, RESTORE and NEW data files +3X faster

Better Flow

• Added caved properties in the block model to keep track of mineral grades and rock properties as the cave process progresses.
• Over 10 new FISH functions to interrogate and dynamically adapt the block model properties and markers properties, provide more flexibility for cave analysis (e.g., static days in caved blocks and lower- and upper-fragmentation limits on rock fragmentation).

Incredibly Faster

• The internal DrawRequest module has been restructured to make importing the Draw Period file (.csv) virtually instant.
• Now Draw Period data files can load in less than two seconds in v910, compared to 10 hours in v900, for a large mine simulation.

Better Scripting

• Python can now access the built-in geometry logic (user-defined nodes, edges, faces, volumes, etc.).
• The contourpy Python library (for calculating contours of 2D quadrilateral grids) is now built-in.

And More!
• Grouping operations are now faster.
• New Hoek-Brown curve fitting and plotting tool – then add these value as PROPERTY commands right into your model.
• QT 6 user interface libraries have been updated:
– User interface appearance is improved on high-resolution monitors.
– No need to specify OpenGL Mode.
• By place an * at the start of a command, all related warning messages will be suppressed.