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急倾斜薄矿体轻质吸能材料人工假底设计及应用
李电辉
- 作者单位：
- （甘肃省天水李子金矿有限公司）
基金项目：
- 国家重点研发计划项目（2022YFC2905004）
详细信息：
- 作者简介：
- 李电辉（1971—），男，高级工程师，硕士研究生，从事矿山采矿技术、生产管理工作；E⁃mail：LDHZDY@126. com
- 通讯作者：
- PDF下载
Design and application of artificial false bottom with lightweight energy‑absorbing materials for steeply inclined thin ore body
- English Author：
Li Dianhui
- Unit：
- （Gansu Province Tianshui Lizi Gold Mine Co., Ltd.）
- 摘要
- 在线预览
- 参考文献
摘要:
针对李子金矿急倾斜薄矿体开采中底柱高品位矿石回收难题，采用基于轻质吸能材料的人工假底施工工艺，实现井下底柱资源的高效置换。研究基于薄板弹性力学理论建立了人工假底力学模型，系统分析了充填体在自重及上部荷载作用下的应力分布和变形特性，进而确定了人工假底的最优厚度、混凝土强度和钢筋配筋方案，并通过数值模拟验证方案的可行性。采用轻质吸能材料施工后，不仅显著降低了结构自重和施工周期，而且大幅提升了机械化施工水平和劳动安全性，对推动矿山绿色、可持续开采具有重要意义。
关键词:
轻质吸能材料；人工假底；急倾斜薄矿体；充填采矿；薄板弹性力学理论；数值模拟；绿色矿山
Abstract:
To address the challenge of recovering high⁃grade ore from the bottom pillar in the mining of steeplydipping thin orebodies in the Lizi Gold Mine of Gansu, an artificial false bottom construction technology based on light⁃weight energy⁃absorbing material was adopted to achieve efficient underground bottom pillar resource replacement.Based on the theory of elasticity for thin plate, a mechanical model of the artificial false bottom was established, and thestress distribution and deformation characteristics of the backfill under self⁃weight and upper load were systematicallyanalyzed. The optimal thickness, concrete strength, and reinforcement scheme of the artificial false bottom were thendetermined and verified through numerical simulation. The application of lightweight energy⁃absorbing materials signif⁃icantly reduced the structural weight and construction period while greatly enhancing mechanized construction efficiencyand labor safety. This approach is of great significance in promoting green and sustainable mining.
Keywords:
lightweight energy⁃absorbing material; artificial false bottom; steeply dipping orebody; backfillmining; theory of elasticity for thin plate; numerical simulation; green mine
