采空区固碳充填协同煤自燃灾害防治技术研究

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中图分类号：TD755 文献标志码：A 文章编号：1672-1098（2025）05-0062-16

Abstract： Objective Under the impetus of the "dual carbon" strategy driving the green transformation of the coal industry，this study proposes a novel concept of carbon sequestration filing in goafs coupled with spontaneous combustion prevention，aiming to address the dual challenges of disaster control and carbon reduction.Methods The mechanisms of physical andchemical carbon sequestration in goafs were elucidated，while the sources and transportation pathways of CO2 were systematically analyzed. A biomimetic porous filling material， synthesized from industrial solid waste，was developed to enhance CO2 mineralization，and a collaborative technical framework of "precise identification-material development-safeinjection-efect evaluation"wasestablished. Results Experimental investigations demonstrate that the open-pore structure of the material markedly accelerates mineralization， increasing the mineralization depth by approximately 2 times and the mineralization rate by 39% Grouting solidification was shown to elevate the crossing-point temperature of coal samples by 19.6～20qC （20 compared withrawcoal，while the synergistic efects of physical oxygenisolation and chemical inhibition significantly suppressed the generation of CO and CO2 ， thereby mitigating the oxidation pathway of spontaneous combustion. Conclusion The research achieves an organic integration of carbon sequestration and fire prevention， and advances the colaborative paradigm of"mines as sequestration sites，gases forhazard control，and sealing for carbon reduction" providing a new framework with substantial engineering value for synergistic disaster mitigation and carbon storage in coal mines.

Key words： mined-out area; coal spontaneous combustion; carbon sequestration backfiling; CO2 mineralization; disaster prevention and control

随着全球气候变化加剧，生态环境安全日益受到关注，“双碳”目标下，作为高碳排放主体的煤炭行业面临绿色转型的迫切需求与政策机遇。（剩余20093字）