针对某煤矿的瓦斯涌出量快速预测问题,提出了采掘瓦斯平衡系数,采用分源比例法,在布置回采巷道阶段可以预测采区瓦斯涌出量。通过分源比例法预测出的采区瓦斯涌出量回采时为7.36 m3/min,检修时为5.80 m3/min,实测值回采时为7.81 m3/min,检修时为6.18 m3/min,误差控制在15%以内。本研究为煤矿瓦斯涌出量快速预测提供了理论依据和实践基础。Aiming at the problem of rapid prediction of gas emission in a coal mine, the gas balance coefficient of mining and excavation is proposed. The gas emission in the mining area can be predicted by using the sub-source ratio method in the stage of arranging the mining roadway. The gas emission in the mining area predicted by the source ratio method is 7.36 m3/min during mining, 5.80 m3/min during maintenance, the measured value is 7.81 m3/min during mining and 6.18 m3/min during maintenance. The error is controlled within 15%. This study provides a theoretical basis and practical basis for the rapid prediction of coal mine gas emission.
随着我国矿山行业的快速发展,尾矿已成为产生量和堆存量最大的工业固废,且尾矿库存在引发环境风险的潜在威胁。为应对这些问题,本文研究了尾矿的资源化利用现状及其在“双碳”背景下通过CO2矿化实现固碳的潜力。实验以镁铁硅酸盐型尾矿为对象,探讨了矿化反应过程中的pH变化、矿化产物的生成及其对尾矿稳定性的影响。结果表明,尾矿矿化固定CO2的技术具有良好的可行性,并能有效提高尾矿库的结构稳定性。此外,本文提出了一种基于CO2矿化的尾矿库强化治理方案,设计了尾矿库现场矿化系统,验证了其在大规模固碳应用中的潜力。研究表明,通过矿山固废的CO2矿化利用,既能减少环境风险,又能为实现碳减排目标提供新的路径,具有显著的环境和经济效益。With the rapid development of my country’s mining industry, tailings have become the largest industrial solid waste in terms of production and stockpiling, and tailings ponds pose a potential threat to environmental risks. To address these issues, this paper studies the current status of tailings resource utilization and its potential for carbon fixation through CO2 mineralization under the background of “dual carbon”. The experiment took magnesium-iron silicate tailings as the object, and explored the pH changes during the mineralization reaction, the generation of mineralization products and their effects on the stability of tailings. The results show that the technology of CO2 fixation by tailings mineralization has good feasibility and can effectively improve the structural stability of the tailings pond. In addition, this paper proposes a tailings pond enhancement management scheme based on CO2 mineralization, designs an on-site mineralization system for tailings ponds, and verifies its potential in large-scale carbon fixation applications. Research shows that the utilization of CO2 mineralization from mining solid waste can not only reduce envir
