[1]刘志鑫,付士根,池明波,等.以铁尾矿砂为细骨料的尾矿库加固材料力学性能研究*[J].中国安全生产科学技术,2026,22(4):21-28.[doi:10.11731/j.issn.1673-193x.2026.04.003]
LIU Zhixin,FU Shigen,CHI Mingbo,et al.Study on the mechanical properties of tailings dam reinforcement material using iron tailings sand as fine aggregate[J].Journal of Safety Science and Technology,2026,22(4):21-28.[doi:10.11731/j.issn.1673-193x.2026.04.003]
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以铁尾矿砂为细骨料的尾矿库加固材料力学性能研究*
LIU Zhixin,FU Shigen,CHI Mingbo,et al.Study on the mechanical properties of tailings dam reinforcement material using iron tailings sand as fine aggregate[J].Journal of Safety Science and Technology,2026,22(4):21-28.[doi:10.11731/j.issn.1673-193x.2026.04.003]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 22
- 期数:
- 2026年4期
- 页码:
- 21-28
- 栏目:
- 安全工程技术
- 出版日期:
- 2026-04-30
文章信息/Info
- Title:
- Study on the mechanical properties of tailings dam reinforcement material using iron tailings sand as fine aggregate
- 文章编号:
- 1673-193X(2026)-04-0021-08
- Keywords:
- iron tailings sand; resource utilization; mechanical properties; tailings pond reinforcement
- 分类号:
- X936
- 文献标志码:
- A
- 摘要:
- 为保障尾矿库长期安全，以铁尾矿砂作为细骨料，制备水泥基尾矿库加固材料，以减少溃坝风险、增强尾矿库稳定性。通过单轴抗压、巴西劈裂、直接剪切实验，系统测试砂胶比1.5，2.0，2.5，3.0下材料的力学性能，探究加固材料力学性能变化规律，寻找用于坝体加固的最佳配比。研究结果表明：铁尾矿砂颗粒细小坚固、棱角分明、能有效填充水泥空隙；随着砂胶比的增大，铁尾矿砂水泥加固材料的抗压、抗拉及抗剪强度呈下降趋势；其中砂胶比为1.5的铁尾矿砂水泥加固材料性能最优，28 d时的抗压强度达到37.07 MPa，抗拉和抗剪强度也同时显著优于其他配比。研究结果可为尾矿库坝体抗灾能力提升提供关键技术支撑，有助于促进尾矿资源化利用和环境保护，具有重要的工程应用前景。
- Abstract:
- In order to enhance the long-term safety of tailings ponds,this study developed a cement-based reinforcement material using iron tailings sand as fine aggregate,aiming to reduce the risk of dam failure and improve tailings pond stability.Through uniaxial compression,Brazilian split,and direct shear tests,the mechanical properties of materials with sand-binder ratios of 1.5,2.0,2.5,and 3.0 are systematically evaluated to investigate the variation patterns of mechanical properties in reinforcement materials and identify the optimal mix ratio for dam reinforcement.The results indicate that iron tailings sand,characterized by fine and angular particles,effectively fills voids within the cement matrix.With the increase in sand-binder ratio,the compressive,tensile,and shear strengths of iron tailings sand cement reinforcement materials show a declining trend.The material with a sand-binder ratio of 1.5 exhibits optimal performance,achieving a compressive strength of 37.07 MPa at 28 days,while its tensile and shear strengths also significantly surpass those of other mix ratios.This material not only provides key technical support for risk assessment and disaster resistance of tailings dam slopes but also promotes the resource utilization of tailings and environmental protection,demonstrating considerable potential for engineering applications.
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备注/Memo
- 备注/Memo:
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收稿日期： 2025-12-30
* 基金项目： 国家自然科学基金项目（52374139）
作者简介： 刘志鑫，硕士研究生，主要研究方向为尾矿库安全技术。
通信作者： 池明波，博士，高级工程师，主要研究方向为矿山安全及灾害预警。
