Browsing by Subject "Dewatering"
Now showing items 1-10 of 15
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Assessing the regional structural geological setting as fundamental component of the dolomite risk management process
(North-West University (South Africa), 2016)Dolomite stability investigations conducted within the confines of a pre-demarcated project area rarely take the regional structural geological setting into consideration. As such, the site selection process is very often ... -
A comparison between high airflow drying and adsorption assisted drying for the dewatering of fine coal
(North-West University (South Africa), 2019)Development in the fossil fuel sector should be an on-going process to promote sustainability, while reducing the environmental footprint. It is important to improve operations in the mining sector to ensure that coal is ... -
Determining hydraulic parameters of a karst aquifer using unique historical data from large-scale dewatering by deep level mining – a case study from South Africa
(Water Research Commission, 2014)Although karst aquifers constitute some of the most important water resources worldwide, generally accepted methods for reliably characterising their hydraulic properties are still elusive. This paper aims at contributing ... -
Development of a dewatering control strategy to prevent flooding within deep-level mines
(North-West University (South Africa)., 2022)Deep-level mines are faced with continually increasing challenges regarding heat. New mining depths are constantly reached, and working conditions are becoming intolerable and unsafe. Underground conditions must be controlled ... -
Drying of fine coal using warm air in a dense medium fluidised bed
(2014)Fluidised bed drying is currently receiving much attention as a dewatering option after the beneficiation of fine coal (defined in this study as between 1mm and 2mm particles). The aim of this study was to investigate the ... -
The effect of particle size on the rate and depth of moisture evaporation from coal stockpiles
(SAIMM, 2016)Excessive amounts of moisture in product coal can influence the efficiency of downstream utilization processes due to a decreased calorific value and handling problems. Stockpiles can be used to decrease the moisture content ... -
Fine coal dewatering using high airflow
(Taylor & Francis, 2014)Fluidized bed drying is currently receiving much attention as a dewatering option after the beneficiation of fine coal. Apart from concerns about safety and combustion, the operating costs can be high if very high gas or ... -
Geohydrological consequences associated with the post-mine closure flooding of dewatered dolomitic karst aquifers in the Far West Rand, South Africa
(North-West University (South Africa), 2015)English The thesis presents a hydrologic investigation into the effects of deep-level gold mining on the hydrogeological conditions of a fractured-karst aquifer system in the Far West Rand (FWR) goldfield, South Africa. ... -
An integrated rainfall-runoff water quality model in a mine impacted karst environment
(North-West University (South Africa), 2019)A fully distributed rainfall-runoff model was developed for the Wonderfonteinspruit catchment (± 1 600 km2), in order to accurately determine the rainfall-runoff and mass transport model’s hydrological components that may ... -
Modeling power failures in deep-level mines to assist with emergency dewatering planning
(North-West University (South Africa)., 2023)A mining complex’s intricate dewatering system removes water that enters the shaft through various means. This system comprises a series of water pumps that require a constant power supply to avoid flooding key areas of ...