Groundwater Dewatering is often required for excavation projects, where the impact of partial or total dewatering of the material is critical for a dry and safe working environment, as well as improving wall stabilities. Typically, this would include open and underground mining or large scale construction workings. Dewatering in the mining industry is frequently used for processing water, while out-of-mine dewatering can prevent contamination of Groundwater.
GCS provides comprehensive services in terms of feasibility evaluations as well as detailed design, management and monitoring of dewatering systems.
The success of Dewatering Studies is heavily reliant on the accurate and comprehensive quantification of aquifer characteristics through aquifer (pump) testing, packer tests or tracer tests.
A comprehensive geophysical investigation of the area is usually performed to identify preferential groundwater flow paths that will be targeted when installing the dewatering points.
Numerical groundwater flow modelling is applied to determine the optimal dewatering approach. Several options are evaluated and the optimal approach from in-pit, out-of-pit, or a combination of both is assessed and the best option identified.
Various dewatering point designs are evaluated, including vertical and inclined boreholes and horizontal drains. Well field spatial layout, borehole depths, and borehole equipment are evaluated and designed.
Dewatering lead times and depths are calculated to allow for comprehensive dewatering of the soil and rock material prior to excavation. Monitoring and continual management are also critical to the success of the dewatering operations.
GROUNDWATER DEWATERING PROJECT DATA
|2013||Africa Barrick Bulyanhulu||Mine Dewatering Simulation||Bulyanhulu Gold Mine|
|2013 to current||African Nickel South Africa||Mine Dewatering and Contaminant Plume Simulation||Jacomynspan|
|2010 to current||Nkomati Mine||Mine Dewatering and Integrated Water Management Plan||Nkomati Mine|
|2013 to current||Lamical / Managem||Mine Dewatering Simulation||North Pumpi Mine|
|2013||Witkop Exploration and Mining (Pty) Ltd||Mine Dewatering and Contaminant Plume Migration||Witkop Colliery|
|2013 to 2015||Anglo American (Kumba Iron Ore)||Mine Dewatering Simulation||Thabazimbi Mines|
|2014||Gold One International Limited||Mine Dewatering Simulation||Cooke 2 Gold Mine|
|2014 to 2015||Royal Bafokeng Platinum||Mine Dewatering Simulation||Styldrift Platinum Mine|
|2013-2014||Two Rivers Platinum||Mine Dewatering and Contaminant Plume Migration||Two Rivers Platinum Mine|
|2012-2013||Gauteng Provincial Government||Tunnel Dewatering and|
|Gautrain court case|
|2013-2014||Metorex||Dewatering Management and|
|2012-2013||Chemaf S.P.R.L||Dewatering Management||Etoile Mine|
|2013-2014||Kumba Iron Ore||Groundwater Impact assessments, Dewatering Management and Numerical Modelling||Thabazimbi Mines|
|2014||ARM||Dewatering Management||Modikwa Mine|
|2012-2014||ENRC||Dewatering Management and|
Groundwater Dewatering (622.7 KB)