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DESIRABLE FIELD CONDITIONS FOR DEWATERING SCHEMES
HYDRAULIC SYSTEMS ANALYSIS
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Acid Mine Water Anthracite aquifer test aquitard artesian aquifer artesian formula 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 confined aquifers Confined Source Bed confining bed deep mines determine dewatering schemes drawdown drilled equation l0 family of leaky field data curve Figure five well system foot gallons per day Geophysical Union ground water ground-water hydraulic head hydraulic properties Hydrogeologic Setting hydrologic Hypothetical Deep Coal l06 gpd l20 days leakage rate leaky artesian type logarithmic paper Neuman and Witherspoon overlying Parizek Pennsylvania Pennsylvania State University permeability of confining piezometric Pindar pollution pumping rate pumping test rock roof area roof collapse roofrock shale siltstone Simulation source bed specific storage square miles Sulfur time-drawdown data unconfined underclay values vertical leakage vertical permeability water level declines