Factors involved in evaluating ground water impacts of deep coal mine drainage

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · Water Resour. Bull.; (United States)

DOI:https://doi.org/10.1111/j.1752-1688.1982.tb00080.x· OSTI ID:5895210

Davis, P R; Walton, W C

The determination of probable ground water impacts of proposed deep coal mining is required as part of permit applications in the US. Impact prediction generally involves well production test analysis and modeling of ground water systems associated with coal seams. Well production tests are often complicated due to the relatively low permeabilities of sandstones and shales of ground water systems. The effects of the release of water stored within finite diameter production wells must be considered. Well storage capacity appreciably affects early well production test time drawdown or time recovery data. Low pumping rates, limited cones of depression, and length of required pumping periods are important well production test design factors. Coal seam ground water system models are usually multilayered and leaky artesian. Mine drafts partially penetrate the ground water system. Simulation of coal mine drainage often involves the horizontal permeability and storage coefficient of the coal seam zone, vertical permeabilities of sandstones and shales (aquitard) above and below the coal seam zone, and the hydrologic properties of the source bed above the aquitard overlying the coal seam zone.

• OSTI ID: 5895210
• Journal Information: Water Resour. Bull.; (United States), Journal Name: Water Resour. Bull.; (United States) Vol. 18:5; ISSN WARBA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
012000 -- Coal
Lignite
& Peat-- Mining
ADMINISTRATIVE PROCEDURES
AQUIFERS
COAL DEPOSITS
COAL MINES
COAL SEAMS
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL QUALITY
GEOLOGIC DEPOSITS
GROUND WATER
HYDROGEN COMPOUNDS
HYDROLOGY
MATHEMATICAL MODELS
MINE DRAINING
MINERAL RESOURCES
MINES
OXYGEN COMPOUNDS
PERMIT APPLICATIONS
PERMITS
POLLUTION
PUMPING
RESOURCES
SIMULATION
TESTING
UNDERGROUND FACILITIES
WATER
WATER INFLUX
WATER POLLUTION
WATER QUALITY