Research on Temporal Patterns of Water-Rock Interaction in the Coal Mine Underground Reservoir Based on the Dynamic Simulation Test.

In general, in the early and middle stages, Cl – showed a trend of increasing first and then decreasing, while HCO 3 – and Cl – had the opposite, and in the late stage, the main anion concentration gradually reached the equilibrium state.

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In SM, SMM, and SMF groups, SO 4 2– showed a trend of rising in the early stage and then slowly fluctuating to equilibrium, whereas SO 4 2– in the MM group showed a decreasing trend in the early stage.

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