Some considerations regarding the steady-state response of shallow aquifers to underground mining
Conference
·
· Univ. Ky., Off. Eng. Serv., (Bull.); (United States)
OSTI ID:5672786
The effect of underground room and pillar mine development (first mining only) on shallow ground water aquifers is often difficult to predict. A hydrogeologic context that includes not only the underlying mine void, but also multiple aquifer-aquitard layers, and zones of rock fracturing is important to understanding the hydrologic effects of underground mining in eastern coal regions. Nested piezometers were installed at various depths above a mine void in western Pennsylvania. Piezometer measurements indicate a downward gradient in head in the rock units overlying the mine that is highly variable, depending on piezometer depth in relation to fractures and shale aquitard layers. While high permeability fracture zones are regions of increased vertical leakage into the mine, aquitard layers significantly retard the downward flow of ground water into the mine. Significant head loss was apparent in wells which, by design or by change, intercepted deep fractures. The higher piezometric surface that exists in shallow aquifer units is exploited best by wells in the area which do not penetrate the underlying aquitard layers. In general, well performance in the overlying aquifers decreases with increasing depth. 7 references, 4 figures, 1 table.
- Research Organization:
- Bureau of Mines, Minneapolis, MN
- OSTI ID:
- 5672786
- Report Number(s):
- CONF-851213-
- Conference Information:
- Journal Name: Univ. Ky., Off. Eng. Serv., (Bull.); (United States)
- Country of Publication:
- United States
- Language:
- English
Similar Records
A Semi-Analytical Solution for Large-Scale Injection-Induced PressurePerturbation and Leakage in a Laterally Bounded Aquifer-AquitardSystem
Effects of longwall mine subsidence on overlying aquifers in western Pennsylvania. Open file report 26 September 1979-25 January 1984
Numerical analysis of solute migration through fractured clayey deposits into underlying aquifers
Journal Article
·
Tue Jul 15 00:00:00 EDT 2008
· Transport in Porous Media
·
OSTI ID:943449
Effects of longwall mine subsidence on overlying aquifers in western Pennsylvania. Open file report 26 September 1979-25 January 1984
Technical Report
·
Tue May 01 00:00:00 EDT 1984
·
OSTI ID:6437588
Numerical analysis of solute migration through fractured clayey deposits into underlying aquifers
Journal Article
·
Fri Jan 31 23:00:00 EST 1992
· Water Resources Research; (United States)
·
OSTI ID:5150110
Related Subjects
01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
012000* -- Coal
Lignite
& Peat-- Mining
58 GEOSCIENCES
580100 -- Geology & Hydrology-- (-1989)
AQUIFERS
COAL MINING
ENVIRONMENTAL IMPACTS
FEDERAL REGION III
FORECASTING
FRACTURE MECHANICS
GROUND WATER
HYDROGEN COMPOUNDS
MECHANICS
MINE DRAINING
MINING
MONITORING
NORTH AMERICA
OVERBURDEN
OXYGEN COMPOUNDS
PENNSYLVANIA
PIEZOMETRY
REMOVAL
RESOURCES
ROOM AND PILLAR MINING
STRATA MOVEMENT
UNDERGROUND MINING
USA
WATER
WATER REMOVAL
WATER RESOURCES
WATER TABLES
WATER WELLS
WELLS
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
012000* -- Coal
Lignite
& Peat-- Mining
58 GEOSCIENCES
580100 -- Geology & Hydrology-- (-1989)
AQUIFERS
COAL MINING
ENVIRONMENTAL IMPACTS
FEDERAL REGION III
FORECASTING
FRACTURE MECHANICS
GROUND WATER
HYDROGEN COMPOUNDS
MECHANICS
MINE DRAINING
MINING
MONITORING
NORTH AMERICA
OVERBURDEN
OXYGEN COMPOUNDS
PENNSYLVANIA
PIEZOMETRY
REMOVAL
RESOURCES
ROOM AND PILLAR MINING
STRATA MOVEMENT
UNDERGROUND MINING
USA
WATER
WATER REMOVAL
WATER RESOURCES
WATER TABLES
WATER WELLS
WELLS