酸性矿山排水水质预测技术体系研究进展

Research progress on the prediction technology system of acidic mine drainage water quality

  • 摘要: 酸性矿山排水(Acid mine drainage,AMD)预测是矿山环境风险识别、矿山废弃物分类管理和污染源头防控的重要依据。近年来,AMD预测研究已逐步突破单一测试方法的局限,形成了由静态试验、动力学实验、矿物学表征及机器学习等共同支撑的综合研究框架。静态实验因快速、简便和成本较低,仍广泛用于开发前期筛查,但难以反映酸和金属释放速率及长期演化;以湿度电池和柱淋滤为代表的动力学实验能够较真实地揭示风化-淋滤过程,是AMD预测的重要依据,但受实验周期、成本和尺度外推能力限制;矿物学方法可从矿物组成、赋存状态和微观结构层面增强对产酸与中和行为的机制解释,但其定量化、标准化和工程适用性仍有待提升。近年来,机器学习及遥感耦合方法为AMD关键水质指标预测、区域识别和动态监测提供了新路径,但仍面临样本不足、区域异质性强、标签稀缺、可解释性不足和跨矿区泛化能力有限等问题。未来AMD预测应进一步推动矿物学参数提取、动力学过程表征、现场监测与数据驱动模型的集成耦合,构建面向矿山废弃物分类管理、污染源头防控和治理决策的综合预测技术体系。

     

    Abstract: Acid mine drainage (AMD) prediction is an important basis for mine environmental risk identification, classification management of mine wastes, and pollution source prevention and control. In recent years, AMD prediction research has gradually moved beyond the limitations of single testing methods and has formed a comprehensive research framework jointly supported by static tests, kinetic experiments, mineralogical characterization, and machine learning. Static tests remain widely used for preliminary screening in the early stages of mine development because they are rapid, simple, and low-cost, but they cannot adequately reflect acid and metal release rates or long-term evolution. Kinetic experiments, represented by humidity cells and column leaching tests, can more realistically reveal the weathering–leaching process and therefore provide an important basis for AMD prediction; however, they are constrained by long experimental cycles, high costs, and limited scalability for extrapolation. Mineralogical methods can strengthen the mechanistic interpretation of acid-generation and neutralization behavior from the perspectives of mineral composition, occurrence state, and microstructure, but their quantification, standardization, and engineering applicability still need further improvement. In recent years, machine learning and remote sensing coupling methods have provided new approaches for predicting key AMD water-quality indicators, regional identification, and dynamic monitoring, but they still face challenges such as insufficient samples, strong regional heterogeneity, scarce labels, limited interpretability, and weak cross-mine generalization ability. In the future, AMD prediction should further promote the integrated coupling of mineralogical parameter extraction, kinetic process characterization, field monitoring, and data-driven models, so as to build a comprehensive prediction technology system oriented toward mine waste classification management, pollution source prevention and control, and remediation decision-making.

     

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