Dear clients,

First of all, for this new year 2016, Itasca is wishing you happiness, prosperity and continued success in your business.
We hope you will continue to enjoy with our software and to collaborate with our company. We will still continue to do our best to satisfy our customers and software users.
The end of 2015 was filled with news and events, and we invite you to read carefully the Software and Conferences sections.

The European Itasca team


Itasca Consulting Ltd. has been performing acoustic emission, ultrasonic monitoring and tomographic imaging at ONKALO underground rock characterisation facility. These geophysical techniques "passively" detect the creation or reactivation of fractures in rock, and "actively" examine the rock by sending signals though it, measuring velocity and amplitude changes to interpret changes in physical properties.
Acoustic emission and ultrasonic monitoring were performed in the volume around a test canister deposition hole. The monitoring of the induced damage confirmed the in-situ spalling strength of the Olkiluoto migmatitic gneiss. A novel P-wave tomographic imaging project has also been performed using custom frames to position sensors around the tunnel to analyse the excavation damaged zone field.
Results from the geophysics can be used to validate and develop numerical models for post-closure performance assessment.

Installation of instrumentation inside experimental hole
(Valli et al., 2014)


Acoustic emission event density for the monitoring period calculated as the number of events per 0.25m x 0.25m x 10m cell.
Red is highest density
(Reyes-Montes et al., 2014)

Valli, J., Hakala, M., Wanne, T., Kantia, P. and Siren, T. 2014. ONKALO POSE Experiment – Phase 3: Execution and Monitoring. Working Report 2013-41. Posiva Oy, Eurajoki.

Reyes-Montes, J.M., Flynn, W. and Huang J. 2014. ONKALO POSE Experiment – Phase 3: Acoustic and Ultrasonic Monitoring. Working Report 2013-39. Posiva Oy, Eurajoki.


Itasca Spain has developed a three-dimensional study of the stabilization and foundation of a pile for a cable bridge. This pile is located in a very sharp slope, with a wide level of colluvial deposits with low strength in the surface. The solution analyzed was based in the construction of an 8 m diameter concrete caisson, anchored to the ground. Different configurations of tensioned anchors were checked in order to select the optimized one. The analyses were made both in terms of factor of safety of the slope and the deformations and forces in the caisson and the anchors. Due to the dimensions of the caisson, it was modelled using volumetric elements, reproducing its real shape. FISH routines were developed to integrate stresses and obtained axial and shear forces and bending moments, all along the pile. These results were used to determine the steel reinforcement needed for the caisson.


Figure 1: Geometry of the caisson


Figure 2. Factor of safety


Figure 3. Axial forces in the caisson

arrow Software

  • PFC 5.0 upgrade
    We are pleased to announce that considering the number of upgrade requests, we have reconsidered the no upgrade policy. From now on, users who are still at V4.0 or older can upgrade their licenses to V5.0.

  • InSite™ v3.7
    The latest releases of the InSite family of software products are available. The software integrates data acquisition, processing, management, visualisation and interpretation for seismological studies, ranging in scale from acoustic emissions in the laboratory, through microseismics around mining and petroleum fields, up to regional-scale earthquakes. Significant improvements have been implemented including two new velocity models, improvements to interpretation methods, speed increases achieved through parallelisation, and enhancements to waveform visualisation. For further information please click here.

  • FLAC 8.0 release
    Be informed that you can still pre-purchase FLAC 8.0 and benefit from a lower price. You will automatically entitle to download and use the FLAC 8.0 Beta software right now.

Current Updates:









arrow Training & Seminars

Itasca will host introductory training courses in Europe:

Shrewsbury, UK 8-10 March 2016 Itasca UK
InSite - Microseismic Processing and Interpretation
Shrewsbury, UK 15-17 March 2016 Itasca UK
PFC Training course Ecully, France 18-20 May 2016

Itasca France

InSite-Lab Shrewsbury, UK Spring 2016

Itasca UK

ITASCA offices regularly organize customized training courses for their clients. The training courses are designed to fit individual user needs and experience. Instruction is available either at Itasca or at the client's location. If you are interested in planning and purchasing a customized software training course, please contact your local agent.

arrow Conferences

Itasca and/or representative will be attending the following conferences:

4th Itasca Symposium on Applied Numerical Modeling 7-9 March, 2016 Lima, Perú
Journées nationales maçonnerie 17-18 March 2016 Marne-la-Vallée, France
7th International Symposium on In-Situ Rock Stress 10-12 May 2016 Tampere, Finland
JNGG 2016 6-8 July 2016 Nancy, France
EUROCK 2016 29-31 August 2016 Cappadoce, Turkey
8th International Symposium on Ground Support in Mining and Underground Construction 12-14 September 2016 Luleå, Sweden
Soil Mechanics and Geotechnical Engineering 16th National Congress 13-15 October 2016 Erzurum, Turkey

arrow Recent Publications

J. J. Oetomo, E. Vincens, F. Dedecker, J-C. Morel (2016) - "Modeling the 2D behavior of drystone retaining walls by a fully discrete element method", in Int. Journal for Numerical and Analytical Methods in Geomechanics, to publish

Sjöberg, J., A. Bolin, A. Sánchez Juncal, T. Wettainen, D. Mas Ivars and F. Perman (2015) – "Input to ore pass design – a numerical modelling study", in Proceedings of International Seminar on Design Methods in Underground Mining, Potvin, Y,. (eds.), pp. 571–584. Perth: Australian Centre for Geomechanics (17–19 Nov, 2015, Perth, Australia)

Tran M. H., Sulem J., Subrin D. and Billaux D. (2015) - "Anisotropic Time-Dependent Modeling of Tunnel Excavation in Squeezing Ground", in Rock Mechanics and Rock Engineering, DOI: 10.1007/s00603-015-0717-y

Ghazal R., Mas Ivars D., Johansson F. and Batres-Estrada R. (2015) - "Back analysis of in situ stress at shallow depth using discontinuum numerical modeling - a case study at the Odenplan station in Stockholm". Proceedings of Eurock 2015, Salzburg, Austria (October 2015)

Vatcher, J., S. D. McKinnon and J. Sjöberg (2015) – "Developing 3-D mine-scale geomechanical models in complex geological environments, as applied to the Kiirunavaara Mine", in Engineering Geology (in press,

Moreno J., Senis M. and Olalla C. (2015) "Aspectos necesarios a introducir en la modelización numérica 3D de las presas de escollera con pantalla de hormigón para reproducir correctamente las tensiones en el elemento de impermeabilización ", In X Jornadas Españolas de Presas, Spancold, Sevilla (18-20 February 2015)

Graf F., te Kamp L., Auer M., Acharya M. and W. Wu (2015) – “Soil aggregate stability in eco-engineering: comparison of field and laboratory data with an outlook on a new modelling approach”, in Recent Advances in Modeling Land-slides and Debris Flows. Springer Series Geomechanics and Geoengineering, pp. 29-47.

Wu W., Switala BM., Acharya M., Tamagnini R., Auer M., Graf F., te Kamp L. and W. Xiang (2015) – “Effect of vegetation on stability of soil slopes: numerical aspects”, in Recent Advances in Modeling Landslides and Debris Flows. Springer Series Geomechanics and Geoengineering, pp. 163-177.

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