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金属矿山 ›› 2018, Vol. 47 ›› Issue (12): 27-33.

• 采矿工程 • 上一篇    下一篇

三鑫金铜矿复杂充填体下间柱回采稳定性研究

葛永翔1,2,张聪瑞1,2,王维3,雷高3,任高峰1,2,吴起1   

  1. 1. 武汉理工大学资源与环境工程学院,湖北 武汉 430070;2. 矿物资源加工与环境湖北省重点实验室,湖北 武汉 430070;3. 湖北三鑫金铜股份有限公司,湖北 黄石 435100)
  • 出版日期:2018-12-15 发布日期:2019-01-17
  • 基金资助:

    基金项目:国家自然科学基金项目(编号:51774220),中央高校基本科研业务费专项(编号:2107Ⅱ36GX)。

Study on the Stability of Interval Pillar Recovery under the Complex Backfilling Body in Sanxin Gold and Copper Mine  

Ge Yongxiang1,2,Zhang Congrui1,2,Wang Wei3,Lei Gao3,Ren Gaofeng1,2,Wu Qi1   

  1. 1. College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China;2. Key Laboratory of Mineral Resources Processing and Environment of Hubei Province, Wuhan 430070, China; 3. Hubei Sanxin Gold Copper Co., Ltd.,Huangshi 435100, China
  • Online:2018-12-15 Published:2019-01-17

摘要: 针对复杂充填体下间柱回采的稳定性问题,以湖北三鑫金铜矿-370 m中段开采为依托,提出了优化方案:间柱矿房分3层从下往上回采,每层矿房尺寸为12 m×10 m,留设厚度为1 m的护壁矿体。利用相似模拟试验手段对该方案的间柱回采过程的稳定性进行研究,揭示回采矿房两侧及顶板的位移和应力变化规律。并借助有限差分软件FLAC3D对相似模拟试验结果进行了对比分析。结果表明:相似模拟试验结果与数值模拟结果具有较好的一致性。在间柱回采过程中,矿房两侧及顶板位移量均较小,应变值趋于稳定,表明基于该方案的回采过程稳定性良好,可实现间柱的安全高效回采。

关键词: 复杂充填体, 间柱回采, 相似模拟试验, 数值计算, 稳定性研究

Abstract: In view of the stability of the interval pillar recovery under the complex filling body, and with the mining of -370 m middle section of the Sanxin Gold and Copper Mine in Hubei as background, an optimization scheme was put forward: the ore room with interval pillar is divided into three layers and then explored from bottom upwards, and the size of each layer is 12 m × 10 m with the retaining wall of 1m. The stability of the stoping process was studied by the similar simulation test, and the displacement and stress variation of the two sides and the roof of the mining room were revealed. Then, the results of the similar simulation tests were compared and analyzed with help of the finite difference software FLAC3D. The results showed that the similarity test results were in good agreement with the numerical simulation results. In the process of pillar recovery, the displacement of both sides and roof of the room is less, and the strain values tend to be stable, which indicates that the stability of the stoping process based on this scheme is well, and the safe and efficient recovery of the pillar can be realized.

Key words: Complex filling body, Interval pillar recovery, Simulation test, Numerical calculation, Stability study