Learning

Getting Started with FLAC2D/FLAC3D
Online
May 29, 2024 - May 30, 2024

Objectives of the training:

•Understand the FLAC2D/ FLAC3D numerical approach and the types ofproblems it can solve
•Know how to manipulate the FLAC2D/ FLAC3D user interface to access andinterpret results
•Follow the recommended solution procedure to simulate a simple case


IMAT Workshop
Toronto, Ontario, Canada
Jun 5, 2024 - Jun 6, 2024

ITASCA is launching IMAT (Itasca's Mining Analysis Toolbox) our groundbreaking software tailored exclusively for underground and open pit mining applications at the ITASCA Symposium in Toronto, June 2024.


Itasca Educational Partnership

ITASCA Educational Partnership (IEP) Programs
IEP Research Program

Itasca's IEP Research Program offers assistance to qualifying graduate students with a desire to utilize Itasca software in their research.

IEP Teaching Program

Software Tutorials

FLAC3D 6.0 Easily Add Structural Support
Converting Plots to Data Files

Any model plot that you create interactively by adding plot-items and adjusting settings can be represented by an equivalent set of commands. This is useful should you want to include command-driven plotting in your modeling run.

FLAC3D 6 0 Model Generation using the Building Blocks Handle

Technical Papers

Deep Sublevel Cave Mining and Surface Influence

With increasing depth, higher stress and more difficult mining. With increasing depth is there more ground surface effects or less?

Which fractures are imaged with Ground Penetrating Radar? Results from an experiment in the Äspö Hardrock Laboratory, Sweden

Identifying fractures in the subsurface is crucial for many geomechanical and hydrogeological applications. Here, we assess the ability of the Ground Penetrating Radar (GPR) method to image open fractures with sub-mm apertures in the context of future deep disposal of radioactive waste.

Tunnelling and reinforcement in heterogeneous ground – A case study

Abstract

A case study of tunnelling in heterogeneous ground conditions has been analysed. The case involves a tunnel excavated in mixed-face conditions, where the main host material was rock, but for a distance of about 30 m, the tunnel had to be driven through a thick layer of soil, primarily moraine and sandy soil materials.During tunnel drifting, a "chimney" cave developed through the soil layer, resulting in a surface sinkhole.This case was analysed using a three-dimensional numerical model with the FLAC3D software code, in which the soil stratigraphy and tunnel advance were modelled in detail. Tunnel and soil reinforcement in the form of jet grouting of the soil, pipe umbrella arch system, bolting, and shotcreting, was explicitly simulated in the model. The studyaimed at comparing model results with observations and measurements of ground behaviour, and to replicate the major deformation pattern observed. The modelling work was based on a previous generic study in which various factors influencing tunnel and ground surface deformations were analysed for different cases of heterogeneous ground conditions.Model calibration was performed through adjusting the soil shear strength. The calibration provided a qualitatively good agreement with observed behaviour. Calculated deformations on the ground surface were in line with measured deformations, and the location of the tunnel collapse predicted by the model. The installed tunnel reinforcement proved to be critical to match with observed behaviour. Without installed pipe umbrella arch system, calculated deformations were overestimated, and exclusion of jet grouting caused collapse of the tunnel. These findings prove that, in particular, jet grouting of the soil layer was necessary for the successful tunnel advance through the soil layer.

Latest News
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Upcoming Events
29 May
Getting Started with FLAC2D/FLAC3D
Objectives of the training: •Understand the FLAC2D/ FLAC3D numerical approach and the types ofproblems it can solve•Know how to manipul... Read More
5 Jun
IMAT Workshop
ITASCA is launching IMAT (Itasca's Mining Analysis Toolbox) our groundbreaking software tailored exclusively for underground and open p... Read More
2 Jun
6th Itasca Symposium on Applied Numerical Modeling
Itasca is pleased to announce that the 6th Itasca Symposium on Applied Numerical Modeling will take place June 3 - 6, 2024, in Toronto,... Read More