Dr. Aglawe is a mining engineer with experience in rock mechanics (hard and soft rock) and in application of advanced numerical modeling for mining and civil projects. He has been involved in the development of models for tunnels, caverns and dams in hydroelectric projects.
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.
The challenges of mining economically have never been greater than under current global financial conditions. The costs and efficiency of dewatering are particularly important at De Beers Canada’s Victor diamond mine in northern Ontario where:
The hydrogeology of the Victor mine area was characterized over three relatively short winter field seasons using packer tests, pumping tests, step-drawdown tests, and downhole logging (particularly production or “spinner” logs) to define the lateral and vertical variation in the hydraulic conductivity of the carbonate aquifer. Based on analysis of the resulting data, wells were designed and submersible pumps with variable frequency drives were installed.
Two 3-dimensional numerical groundwater flow models were constructed:
These models are used in tandem to direct design of the dewatering system, evaluate its effectiveness, and to predict long-term environmental effects.
In January 2009, seven dewatering wells were pumping at a combined rate of about 84,000 m3/day with the goal of maintaining water levels 15 m below the bottom of the pit. By January 2009, the ratio of m3 of water pumped to m3 of material excavated was about 9.8:1.
Atkinson, L.C., P.G. Keeping, and J.C. Wright. 2009. The economic challenges of dewatering at the Victor Diamond Mine in northern Ontario, Canada. Internation Mine Water Association Annual Meeting, Pretoria, South Africa, 19 - 23 October.
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