Study on the Impact of Coal Mine Floor Grouting Renovation on the Hydrogeological and Geochemical Characteristics of the Mining Area Aquifer

Le résumé fourni par la source

Floor grouting renovation is widely applied in coal mining to control water inrush and enhance the stability of the floor strata. However, its impacts extend beyond engineering performance, significantly influencing the hydrogeological and geochemical characteristics of aquifer systems. This review provides a comprehensive synthesis of current knowledge on the mechanisms, processes, and environmental implications of floor grouting in mining regions. It examines how grouting modifies aquifer permeability, porosity, groundwater flow patterns, and pressure regimes, as well as its effects on groundwater chemistry, including pH, major ions, and trace elements. Particular emphasis is placed on the coupled hydrogeological–geochemical processes that govern system evolution, highlighting the feedback mechanisms between physical and chemical changes. The review also addresses the long-term behavior of grouted aquifers, including the stability of sealing effects and potential delayed impacts on groundwater quality. Environmental implications, such as effects on regional water resources and ecosystems, are critically evaluated. Despite significant progress, existing studies often lack cross-disciplinary integration and long-term perspectives. This review identifies key research gaps and proposes future directions, including the development of eco-friendly materials, advanced monitoring techniques, and coupled modeling approaches. The findings contribute to a more holistic understanding of grouting-induced changes and provide guidance for sustainable and safe coal mining practices.

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