Nicola has a degree in geology from the University of Portsmouth and has previous experience in working in the mining and waste management business sectors.
She is responsible for maintaining ICL’s ISO9001 quality standard and has responsibility for all aspects of Itasca software codes and administrative support for ICL’s own software InSite, as well as the day to day running of the office.
This FLAC3D V7.0 training course accommodates new and experienced users. It will be based on examples that attendees will develop and run by themselves to better grasp the mechanics of using FLAC3D V7.0, the key underlying calculation principles and the spectrum of available features. Attendees are encouraged to bring one of their specific cases that may be discussed.
The Fifth International Itasca Symposium will be held at the University of Vienna (Austria). The Symposium will features the application of Itasca software for solving engineering and scientific challenges in geomechanics, hydrogeology, microseismicity, and more.
Maddie has a degree in Business Studies from University of Chester and has experience working with different software products.
She is responsible for all the sales and administration tasks for the ICG Software Codes and assisting with the day to day running of the office.
The McArthur River mine in northern Saskatchewan is the largest single producer of uranium in the world. Most of the ore is extracted by raisebore mining methods at depths of 530 to 600 m below ground surface where pore pressures in the fractured host sandstone and gneiss are on the order of 5 MPa. Currently, ground freezing is used to isolate the ore from ground-water sources. Localized depressurising of the freezing drifts is being considered to increase their ground-stability.
Cross-hole flow and shut-in tests in eight NQ-size coreholes were conducted in the basement rock that is adjacent to a fault contact with the overlying 500 m thick sandstone unit. The hydrogeologic parameters of basement rock in the vicinity of a freezing drift were obtained. A 15% to 25% reduction of pore pressure over a 25 m distance was observed within a three hour test period.
A detailed three-dimensional ground-water flow model was constructed to replicate the pore pressure measured in the coreholes. The pore pressure distribution simulated from the model provides the hydrogeologic input for geotechnical engineers to evaluate ground-stability and assess whether additional active depressurising should be conducted.
Liu, H., R. Bashir, S. Axen, J. Hatley, and G. Murdock. 2010. “Quantifying the Effect of Localized Depressurization on a Deep Underground Orebody at the McArthur River Mine through Cross Hole Hydraulic Testing and Groundwater Modelling.” Proceedings of the 3rd International Conference on Uranium 40th Annual Hydrometallurgy Meeting (Saskatoon, Canada, 15-18 August), vol. 1. E.K. Lam, J.W. Rowson, and E. Özberk, eds. Québec, Canada: Canadian Institute of Mining, Metallurgy and Petroleum: p. 241
Depressurisation Field Testing and Modeling.pdf