Nos réalisations

Seismic Performance of the OPC Puerto Cortes Container Terminal in Honduras (2019)

Itasca conducted a seismic performance evaluation of the trestle‐wharf section of the OPC Puerto Cortes Container Terminal, located in Honduras. A FLAC3D analysis of the soil is performed, including the piles and deck of the terminal. This is a fullycoupled, dynamic, soil‐structure, time‐history analysis that quantifies the performance and potential risks for the structure and slope. The Finn model – Byrne formulation was utilized using data from investigation boreholes.

Estimation des tassements dus à une excavation complexe (2019)

Dans le cadre des travaux du Grand Paris, le groupement VINCI-SPIE construit la future gare du RER E sous La Défense. Dans ce projet, la zone Avant-Gare (AG) Ouest (Fig. 1) est rendue complexe par son phasage et les nombreuses structures avoisinantes, telles que la ligne T2, les fondations d’un bâtiment emblématique de la Défense, le CNIT, et de son parking.

VINCI a demandé à ITASCA de réaliser un modèle 3D pour le calcul des tassements de surface engendrés par les excavations. Le modèle prend en compte le phasage réel de l’ensemble des travaux prévus.

Junction Dam (2018)

Built between 1959 and 1961, Junction Dam is a double-curvature concrete arch dam located on Silver Creek in El Dorado County, California, just downstream from where Little Silver Creek and South Fork Silver Creek merge. The dam is in a relatively narrow canyon with steep sides and retains the Junction Reservoir.

Penetration of a Single Steel Foundation Pin in a Granitic Rock (2018)

The development of a subsea tidal turbine requires specific research work concerning the design of the foundation in contact with the seabed. This design stage can be simplified by the use of numerical modelling and more particularly by using discrete modelling. HydroQuest asked Cathie Associates to check their previous calculations regarding the behavior of a single steel foundation pin in a granitic rock mass by using Itasca’s discrete numerical approach and follow the forces applied to the pin as well as the state of the damaged zone around the tip during penetration.

Modélisation de l’alésage et du prolongement d’un tunnel proche de plusieurs excavations (2018)

Dans le cadre du chantier 4 d’extension du laboratoire souterrain de Meuse/Haute-Marne, une niche de sécurité (appelée GT1) de section type
S1 sera alésée puis prolongée avec une section S4. L’axe de ce tunnel est à 16m de l’axe du Puit Auxiliaire (PX).

Karowe Mine Groundwater Flow Model and Predictive Dewatering Simulations (2017)

Karowe Mine, located approximately 16 kilometers (km) southwest of the town of Letlhakane, is a diamond mine where the second largest diamond ever found on record, with a weight of 1,111 carats, was discovered. This project involved simulating mine dewatering and excavation to evaluate future dewatering requirements, as well as providing guidance for future monitoring borehole and piezometer designs.

Seismic Deformation Analyses of a Hydraulic Fill Embankment Dam (2017)

As part of evaluation of seismic performance of this 175-foot high hydraulic fill dam located at a confidential site in the southeast Appalachia region, Geosyntec hired Itasca Consulting Group (Itasca) to perform deformation analyses for seismic loading of the dam using numerical modeling. Prior to the deformation analyses, Itasca also assisted Geosyntec with numerical simulations to assess the liquefaction potential of the dam using the cyclic stress ratio approach.

Liquefaction Risk Mitigation using Jet Grouting and Earthquake Drains (2017)

Boldwing Continuum Architects Inc. has contracted Itasca Consulting Group to perform a liquefaction analysis and evaluate several soil improvement designs for the Langdale Ferry Terminal Project in Vancouver, Canada. The terminal sits on a deltaic granular deposit prone to liquefaction. The new expansion of the ferry terminal has to be designed in compliance with the 2017 Canadian Building Code, which requires the analysis of 11 different earthquake time histories. The most challenging requirement is to design the ground improvement to limit any lateral soil spreading within 100-150 mm.

Modélisation 2D du dallage sur sol renforcé par inclusions rigides (2017)

Le projet d’extension d’une cave à vin à AMPUIS (69) prévoit la réalisation d’un dallage de 20cm d’épaisseur sur un sol renforcé par des inclusions rigides.

Comportement mécanique d’un centre de stockage en surface de déchets radioactifs de faible et moyenne activité à vie courte (2017)

Dans le cadre de la conception et de la démonstration de sureté des ouvrages de stockage de déchets radioactifs de faible et moyenne activité à vie courte au Centre de Stockage de l’Aube (CSA, Nord‐Est de la France), ITASCA Consultants SAS, en groupement avec EGIS Industries, a évalué le comportement mécanique des ouvrages gravillonnés destinés à recevoir les colis de type « béton durable ».

Sjömalmen — Cave Modeling and Prediction of Ground Deformations (2017)

The city of Kiruna is partly located on the hanging wall side of the LKAB Kiirunavaara Mine. In the long-term perspective, it is not possible to have any residential buildings or infrastructure within the fracture zone and cave zone resulting from mining. An urban transformation process for the Kiruna city center is thus currently underway. The current prognosis is empirical based on observations since the early 1960s until today.

Rock Mechanics Pre-Feasibility Studies (2017)

When starting a new mine, whether it's a open pit or an underground mine, the designer faces many challenges! One of these is the understanding of rock mass conditions and how this affects the choice of mining methods and the mine design at an early stage.

Modeling and Calibration of a Blocky Granite Rock (2017)

In the framework of the development of a subsea tidal turbine, the design of the foundations has to be optimal. Cathie Associates, on behalf of HydroQuest, wanted us to investigate the penetration of a single steel foundation pin in a granitic rock mass by using a discrete numerical approach and follow the state of the damaged zone around the tip during penetration.

Electrical resistivity and air permeability of a model baked anode material (2017)

A baked anode is a complex material, that results from the mixing and baking of different petrol coke grains, with different size distributions, with a pitch binder. A PFC2D model accounting for the microstructure of a baked anode, using the Bonded Particle Model (BPM) has been developed in previous studies.

Practical Open Pit Rock Mechanics (2017)

Open pit mining often result in high rock slopes, sometimes combined with difficult rock conditions. This is further augmented by large blasting rounds resulting in high vibrations. Reinforcement of pit slope walls is also difficult and many times associated with high costs and loss of production. Bench slope stability is vital for a safe working place for all personnel in the mine as well as for avoiding production loss. Itasca Consultants AB is providing technical, on-site rock mechanics expertise to several open pit mines in northern Sweden.

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