A Comprehensive Review of Borehole Sealing Materials and Methods for Gas Control in Coal Mines

Weijie Chen

doi:10.54097/57njfk21

Authors

Weijie Chen

DOI:

https://doi.org/10.54097/57njfk21

Keywords:

Borehole Sealing, Gas Control, Coal Mine Safety, Sealing Materials, Gas Drainage Efficiency

Abstract

Borehole sealing is a critical component of gas control in coal mines, directly influencing the efficiency of gas drainage and the overall safety of underground operations. This review comprehensively examines the mechanisms, materials, and methods of borehole sealing, highlighting their role in preventing gas leakage and enhancing extraction efficiency. Traditional sealing materials, such as cement-based compounds, offer moderate performance but suffer from durability issues. In contrast, polymer-based and advanced nanomaterial sealants provide improved sealing capabilities and longer service life. Various sealing methods, including mechanical, chemical, and hybrid techniques, are analyzed for their effectiveness in different geological conditions. Case studies demonstrate that optimized sealing strategies significantly improve gas drainage rates and mine safety. Despite these advancements, challenges such as material degradation, high costs, and the need for standardized application procedures remain. Future research should focus on developing cost-effective, high-performance sealing materials, optimizing composite sealing techniques, and integrating intelligent monitoring systems for real-time assessment. Addressing these issues will enhance gas drainage efficiency, reduce methane emissions, and improve the sustainability of coal mining operations.

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