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<p>To assess the application potential of steel slag-slag based composite foam material (CFM) for mine fire prevention, this study comprehensively investigate its compression damage behavior, coal consolidation capacity, thermal insulation performance, and spontaneous combustion inhibition effect. The compression damage mechanism of CFM was analyzed via stress–strain curves and real-time damage observation. Its coal consolidation capacity was evaluated by testing the compressive strength of CFM-coal composites with varying coal particle sizes. Thermal insulation performance was assessed using a self-developed thermal insulation test system, while the spontaneous combustion inhibition effect was determined through a tube furnace programmed heating system. Results indicate that CFM demonstrates superior energy absorption and impact resistance, with its compression damage process encompassing four stages: elastic–plastic deformation, crack propagation, crushing plateau, and compression densification. CFM exhibits excellent consolidation of large-sized crushed coal particles, achieving a 28-day consolidation strength of 7.92&#xa0;MPa. Thermal insulation tests show that CFM markedly slows&#xa0;the temperature rise&#xa0;of coal masses, with an average heating rate half that of conventional cementitious materials. Programmed heating tests reveal that CFM effectively encapsulates coal particles, isolates oxygen, and reduces the CO generation rate during coal oxidation. This study verifies that CFM possesses superior fire prevention performance, supporting its broad application prospects in mitigating coal spontaneous combustion in mines.</p>

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Fire prevention performance and application mechanism of steel slag-slag based composite foam material

  • 期刊论文

  • 发表日期：

    2026年8月1日

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  • Xian Xi,
  • Baiyi Li,
  • Zhengyan Wu,
  • Jianuo Zhu,
  • Mei Lu

摘要

To assess the application potential of steel slag-slag based composite foam material (CFM) for mine fire prevention, this study comprehensively investigate its compression damage behavior, coal consolidation capacity, thermal insulation performance, and spontaneous combustion inhibition effect. The compression damage mechanism of CFM was analyzed via stress–strain curves and real-time damage observation. Its coal consolidation capacity was evaluated by testing the compressive strength of CFM-coal composites with varying coal particle sizes. Thermal insulation performance was assessed using a self-developed thermal insulation test system, while the spontaneous combustion inhibition effect was determined through a tube furnace programmed heating system. Results indicate that CFM demonstrates superior energy absorption and impact resistance, with its compression damage process encompassing four stages: elastic–plastic deformation, crack propagation, crushing plateau, and compression densification. CFM exhibits excellent consolidation of large-sized crushed coal particles, achieving a 28-day consolidation strength of 7.92 MPa. Thermal insulation tests show that CFM markedly slows the temperature rise of coal masses, with an average heating rate half that of conventional cementitious materials. Programmed heating tests reveal that CFM effectively encapsulates coal particles, isolates oxygen, and reduces the CO generation rate during coal oxidation. This study verifies that CFM possesses superior fire prevention performance, supporting its broad application prospects in mitigating coal spontaneous combustion in mines.