The act of taking water from a mine that is being operated has been done since Neolithic times. In the past it was done by using a shadoof, digging deeper dikes so that gravity would remove the water, by mounting leather water-filled buckets on water wheels or, if nothing else, carrying water-filled buckets manually. The Archimedes' screw was also historically used to pump water out of mines. Where no dewatering techniques were effective the mine had to be shut down due to flooding.
Underground Mine Design, Planning, and Engineering (US) bringing with them significant experience in the fields of coal hydrogeology and coal mine dewatering. At the Skyline longwall coal mine in Utah, the two teamed up to determine the source of large, persistent groundwater inflows emanating from fracture intersections.
Our dewatering pumps are made from high-quality materials and designed to provide reliable, uninterrupted pumping of light abrasive water. Our range is expanding too, so you can get the perfect solution for your specific needs. Mine dewatering applications include: Underground metals, minerals and coal; Sand & gravel pits; Quarries; Open-pits
Abstract—Underground mine working changes hydraulic gradient which affect the underground surface water flow pattern. It induces slow inflow of water from, porous soil and rock mass towards the mining excavation. Mine dewatering is the removal of percolated or logged water from mines to
Nov 20, 2017· I recently visited an underground mine where the population of electric submersible “Dewatering” pumps numbered close to 80 pumps. Up to the first 6 months of this year (2017) the mine had spent close to $600k on pump repairs and replacements.
AbstractThe University of the Free State investigated the possible dewatering of boreholes situated on the farm properties in the vicinity of an underground coal mine. The investigation consisted of a hydrocensus phase, pumping tests and groundwater sample collection in underground mine workings phase.
area limit the zone of influence of mine dewatering to the modeled area. The eastern constant head cells impose the observed downward hydraulic head gradient within the mine area. Drain cells represent the effects of TQR and N-Zone underground mine workings, including drifts,
Typically, the three most expensive costs to an underground mine are labour, compressed air and water control (water control includes storm water control and mine dewatering). The term dewatering means the removal of water from a high-wall or from underground. It can also be
Dewatering and groundwater control is an important part of many open pit and underground mines. Effective dewatering is a pre-requisite for safe and efficient mining. Poorly controlled groundwater will waste money, slow down mining and potentially cause adverse environmental impacts.
Jul 31, 2013· preene UNDERGROUND METHODS • In underground mines, the conventional approach is to use the mine itself to control groundwater, by allowing the workings to act as drains • Once the water is in the mine it is passed along roadways (by pumping or gravity) to a deeper part of the mine (sump) or shaft bottom, to be pumped out via shaft or decline • Due to depth there
Underground Mine Design, Planning, and Engineering (US) bringing with them significant experience in the fields of coal hydrogeology and coal mine dewatering. At the Skyline longwall coal mine in Utah, the two teamed up to determine the source of large, persistent groundwater inflows emanating from fracture intersections.
Nov 20, 2017· I recently visited an underground mine where the population of electric submersible “Dewatering” pumps numbered close to 80 pumps. Up to the first 6 months of this year (2017) the mine had spent close to $600k on pump repairs and replacements.
Pumps & Systems, March 2013 Mining applications are as diverse as construction or water and wastewater applications. Each jobsite has specific requirements and needs. Underground and open pit mines have several layout and design obstacles. Regardless of the mine and its setup, water is a mine’s biggest enemy. Getting water out—and keeping it out—is the primary focus of any mine plan.
Disposal of Coal Combustion Byproducts in Underground Coal Mines204 Кб. Although the majority of the states polled indicated that underground injection is allowed, the practice of disposing in underground coal mines is not prevalent.In addition, there is potential for modifying or degrading local groundwater conditions and if dewatering a mine void area prior to filling with coal...
Nov 28, 2009· Underground Coal Mine Pump Station Magma Copper Mine "Underground De-Watering Pump Project" Duration: 14:54. PhoenixPumpsInc 5,459 views. 14:54. Mono Mine Dewatering Solutions 512x288
The effects of underground coal mining on aquifer dewatering have been summarized by Sgambat, et al (1980), based on their literature survey for the eastern United States. Hobba (1981) 'has also reported on dewatered rock and reduced well yields overlying deep mines in West Virginia, especially in the Farmington area of western Marion County.
Aquifer dewatering due to underground longwall mining at a mine site in southwest Pennsylvania (Mine Y) and a site in northern West Virginia (Mine 2) was studied. Wells, springs, and streams at least 500 feet above the base of the Pittsburgh coal seam had reported or measured near-surface dewatering in the hills over and adjacent to longwall
Jun 24, 2008· It is a challenge for underground mining also. The water level needs to be lowered as the floor of the mine is dug deeper to maintain dry and safe working condition. Why mine dewatering? Open pit mining can ensure >90% extraction of the coal resource and impacts related to this type of operation can be mitigated using well-tested
Nov 23, 2013· Underground Mine Dewatering Techniques • In underground mines, the conventional approach is to allow groundwater to enter the workings, effectively using the mine itself as a drain • The water entering the mine is passed along roadways (by pumping or gravity) to a deeper part of the mine (sump) or shaft bottom, to be pumped out via shaft or
Jul 31, 2013· Mine dewatering techniques 1. preene MINE DEWATERING Dr Martin Preene Preene Groundwater Consulting June 2014 2. preene SYNOPSIS Synopsis • Water management for mining • Approaches to groundwater control • Examples of mine dewatering technology Open pit Underground Shafts 3.
Examples of mine dewatering techniques at an open pit mine Open Pit Dewatering Techniques In-pit pumping This is the simplest mine dewatering approach, with potentially the lowest capital costs. The method involves allowing groundwater to enter the pit, then directing it (via drains and ditches) to sumps, from where it is pumped away to the
underground coal mine dewatering pumps are intende d to work in the harshest en vironments. 1.1.2. Underground and open pit coal mine pu mping systems : For Coal mine production need
5. Amplify the potential of tube settling which appears to be a feasible clarification technique for certain mine waters. 6. Study the dissolution of coal mine sludge in underground mines. 7. Evaluate pressure filtration and centrifuging which seem to have been prematurely disregarded as feasible methods for dewatering coal mine sludges. 8.
Future underground coal mines will require dewatering when they penetrate the Blackhawk-Star Point aquifer. A finite- difference, three-dimensional computer model was used to estimate the inflow of water to various lengths and widths of a hypothetical dewatered mine and to estimate drawdowns of