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Design of temporary rock support for SFR (2021)

The Swedish Nuclear Fuel and Waste Management Company (SKB) is planning to extend the short-lived radioactive waste repository with five 275 meters long and one 240 meter long vault. Since the extension could lead to damage on the existing facility, Itasca designed a temporary support system to prevent loose rock.

Stability Design of Open Pit Walls Using 3D Modelling Approach (2020)

The open pit mine is part of a Greenfield exploration project. Itasca Consultants GmbH in corporation with Itasca Chile were contracted to develop a stability design of the pit. The analysis has been performed using Itasca’s three-dimensional distinct element code, 3DEC (Itasca, 2016).

Conditioning DFN models by GPR data (2020)

As part of the EU Horizon 2020 ENIGMA ITN project, ICSAS, the CNRS, and SKB proposed a PhD project entitled “Flow and transport in fracture networks: reducing uncertainty of DFN models by conditioning to geology and geophysical data”, to develop and test a methodology for rock characterization that would help in the decision-making process for an adequate location of the nuclear waste canister burying.

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.

Stability during the construction of diaphragm-walls in sand-fills (2019)

For the construction of the diaphragm‐walls of a cut & cover tunnel in sand‐fill, Itasca Consultores S.L. has been analyzing the stability of the slurry walls of an excavation panel

Numerical simulations of shield support for a coal mine (2019)

The development and mining of a deeper seam in a coal mine, located in southern Siberia is planned. ITASCA was tasked with assessing the minimum support pressure and maximum unsupported distance between shield and coal face required to ensure stability of the roof. Also the stress state, displacement field and excavation damaged zone in the roof of the seam were analyzed.

Pore Pressure Model for Large Open Pit Mine in the North of Chile (2019)

For over five years, Itasca Chile SpA (Itasca) has developed and continuously updated, the 3D numerical groundwater flow model for this open pit mine in Chile. The model is primarily used to estimate pore pressure distributions for past, present, and predictive stages of the pit excavation. These are subsequently used for 3D slope stability analysis. With the new and updated model, new predictions for future stages were made, and new mining and drainage plans were evaluated from a hydrogeological point of view.

Estimating settlements due to a complex excavation (2019)

In the context of the Greater Paris works, the VINCI-SPIE group builds a future metro station underneath the CNIT centre in Paris, for the westward extension of RER E (EOLE). The West Pre-Station is particularly complex due to its excavation phasing and the presence of many surrounding structures, including among others the T2 tramway line and several foundations.

Numerical Investigation of the Mechanical Response of Dual-Purpose Canisters to Internal Pressurization (2019)

Dual purpose cannisters (DPCs) are used for temporary storage and transportation of spent nuclear fuel rods. The U.S. Department of Energy is investigating the performance of DPCs for direct geological disposal of spent nuclear fuel. Itasca developed a numerical modeling methodology to better understand how a DPC will respond to a criticality event.

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.

Modelling over-boring and extension of a tunnel with surrounding excavations (2018)

As part of phase four in the extension of the ANDRA Meuse/Haute-Marne Underground Research Laboratory, a safety niche (called GT1) will be over-bored into a larger section, then extended. The tunnel axis is 16 m from an auxiliary shaft (named PX). Two perpendicular drifts, called GLN and GLE, connect these 2 excavations.

Development of Conceptual and Numerical Groundwater Models for EIA Studies (2018)

Itasca Chile SpA was retained to develop a numerical 3D groundwater flow model that would allow the assessment of potential environmental impacts over the aquifer due to the infiltration associated with the expansion of the Tailings Storage Facility (TSF). Additionally, it was requested to study the potential influence of infiltrations on the mine pit located about 3 km of the TSF.

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.

Modelling concrete slab on rigid inclusion reinforced soil (2017)

In the context of a wine cellar extension project, a 20cm thick concrete slab is to be constructed on a soil reinforced by rigid inclusions. Itasca France has been called by the design office to verify the mechanical resistance of the concrete slab and assess its settlement under a uniform load.

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