Goldcorp – Eleonore Project

Goldcorp recently started operating the Éléonore mine, located in the James Bay region. It is an underground mine which will have a depth of around 1,400m. Currently, the exploration well has been completed to a depth of 690m and the production well and ramp are under construction (at approximately 900m). Goldcorp is also in the process of analyzing the recovery of the surface pillar via an open pit mining

Goldcorp is observing significant water infiltration in certain areas of the mine. Hydro-ressources' contribution therefore consists of supporting the company in water control and/or dewatering.

Several investigation campaigns have been carried out in the field, allowing in particular to assess the link between surface water and groundwater. Indeed, the Opinaca reservoir is located above a portion of the deposit. To do this, filtration flow tests were carried out as well as some tracing tests.

In 2014, several tests were carried out underground in order to characterize some fracture networks and in 2015, a series of profile tracing tests were carried out on the Reservoir in order to know the extension of the sub-vertical faults. A convergent tracing test notably made it possible to demonstrate an obvious link between certain fault zones. The construction of a numerical model using the FEFLOW 7 software is in progress. In this model, Hydro-Ressources uses the 3D mode with unstructured mesh as well as the Leapfrog software for the generation of 3D meshes.

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