Hi all,
I am looking for some help with a study on dewatering rates for flooded open pits in Saprolite. We need to dewater the pits in order to re-start mining (pits have been flooded for approx. 8 years). We are also looking to lower the water table around the pits at the same time.
I am trying to work out how to model failures that may happen due to the dewatering process, i.e., pit slopes going from saturated through undrained and finally drained conditions. I need to have a rate of dewatering as an outcome.
Any help of papers to read, books, or real-world examples would be appreciated.
Many thanks
David Hannon
Comments
The dewatering rate to the ground water level is determined by the pumping capacity installed. The anticicipated precipitation and inflow would need to be factored in to the time schedule. Drawing down the water table is of course more complex, as it depends on the permeabilty of the different strata down to the preferred level. The following links may be of some use to you.
https://www.itascainternational.com/technical-papers/mine-dewaterin...
https://www.piteau.com/piteau-highlights/mine-water-management-webi...