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Karst groundwater represents important natural resources and is the main target groundwater of drainage in the coal-mine fields of Northern China. It is easily influenced by external environment. However, the evolutionary processes and those factors impacting the Ordovician carbonatite groundwater are not well understood. To investigate the geochemical evolution of Ordovician carbonatite groundwater,...
A dewatering test is a common tool to estimate the physical properties of water-bearing layers in coal mines. The three step-drawdown dewatering test of unsteady flow, which combines both steady and unsteady flows, is designed in this study. The test design involves the identification of hydrogeological conditions, calculation of hydrogeological parameters, and prediction of mine water yields, particularly...
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