Prevention of Coal Mine Drainage Formation by Well DewateringCollege of Earth and Mineral Sciences, Pennsylvania State University, 1971 - Coal mines and mining - 146 pages |
Contents
MINE DEWATERING 4 | 4 |
WELL LOCATIONS | 27 |
DESIRABLE FIELD CONDITIONS FOR DEWATERING SCHEMES | 34 |
4 other sections not shown
Common terms and phrases
Acid Mine Water Anthracite aquifer and non-aquifer aquifer test aquitard artesian aquifer artesian type curves Bituminous Coal channel sandstone coal beds Coal Mine Drainage coefficient of permeability coefficient of storage coefficient of transmissivity coefficient of vertical Composite Cones compute Cones of Depression confining bed Darcy's Law deep mines determine dewatering schemes drawdown drilled equation family of leaky field data curve foot Free Water Surface gallons per day Geophysical Union gpd/sq ground water ground-water hydraulic head hydraulic properties Hydrogeologic Setting hydrologic Hypothetical Deep Coal K₁ leakage rate leaky artesian type logarithmic paper Neuman and Witherspoon observation overlying Parizek Pennsylvania Pennsylvania State University permeability of confining piezometric Pindar pollution pumping rate pumping test roof area roof collapse Sandstone Source Bed Shale siltstone Simulation Source Bed Shale specific storage square miles Sulfur time-drawdown data unconfined aquifers underclay values vertical leakage vertical permeability water level declines Water Table