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<p>Mining in ultra-wide working faces over confined aquifers is characterized by significant floor strata failure depth and elevated water inrush risks, posing severe threats to miners' safety. Research on floor water inrush risk assessment holds critical guiding significance for mine water hazard prevention. This study systematically analyzed dominant controlling factors of floor water inrush in ultra-wide working faces. Innovatively integrating high-density 3D electrical exploration technology and radio wave perspective data into the evaluation index system, a constant weight model (CWM) was established, and a dynamic variable weight model (VWM) was further developed by introducing state variable-weight functions. Comparative validation with traditional water inrush coefficient method (TS) and CWM, combined with network parallel electrical monitoring results, demonstrated that prediction accuracy ranked as VWM &gt; CWM &gt; TS, with a consistency coefficient of 0.8816 between VWM and electrical monitoring outcomes. Finally, based on the opposing-direction Mining practice of the ultra-wide working face 21609 in Binhu Coal Mine, a systematic framework for floor water hazard prevention and control under mining conditions over Ordovician limestone confined aquifers was proposed. The findings achieve quantitative and refined evaluation of floor water inrush risks, providing theoretical foundations for water hazard mitigation in confined aquifer mining.</p>

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Dynamic evaluation of water inrush potential in ultra-wide working face mining on confined aquifer driven by geophysical data

  • 期刊论文

  • 发表日期：

    2025年9月6日

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  • Huiyong Yin,
  • Hongxu Ren,
  • Fangying Dong,
  • Weifu Gao,
  • Daolei Xie,
  • Lifeng Zhang,
  • Tao Wu

摘要

Mining in ultra-wide working faces over confined aquifers is characterized by significant floor strata failure depth and elevated water inrush risks, posing severe threats to miners' safety. Research on floor water inrush risk assessment holds critical guiding significance for mine water hazard prevention. This study systematically analyzed dominant controlling factors of floor water inrush in ultra-wide working faces. Innovatively integrating high-density 3D electrical exploration technology and radio wave perspective data into the evaluation index system, a constant weight model (CWM) was established, and a dynamic variable weight model (VWM) was further developed by introducing state variable-weight functions. Comparative validation with traditional water inrush coefficient method (TS) and CWM, combined with network parallel electrical monitoring results, demonstrated that prediction accuracy ranked as VWM > CWM > TS, with a consistency coefficient of 0.8816 between VWM and electrical monitoring outcomes. Finally, based on the opposing-direction Mining practice of the ultra-wide working face 21609 in Binhu Coal Mine, a systematic framework for floor water hazard prevention and control under mining conditions over Ordovician limestone confined aquifers was proposed. The findings achieve quantitative and refined evaluation of floor water inrush risks, providing theoretical foundations for water hazard mitigation in confined aquifer mining.