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金属矿山 ›› 2013, Vol. 42 ›› Issue (11): 34-37.

• 采矿工程 • 上一篇    下一篇

水平境界隔离矿柱置换回收关键技术的数值模拟

许振华1,2,乔兰1,李振林2   

  1. 1北京科技大学资源与土木工程学院; 2中国瑞林工程技术有限公司
  • 出版日期:2013-11-15 发布日期:2014-01-26
  • 基金资助:

    * 国家重点基础研究发展计划(973 计划)项目(编号:2010CB 731501)。

Numerical Simulation on Key Technology for Replacement and Recycling of Horizontal-boundary Isolating Pillars

Xu Zhenhua1,2,Qiao Lan1,Li Zhenlin1   

  1. 1.School of Resources and Civil Engineering,University of Science & Technology Beijing;2.China Nerin Engineering Co,Ltd
  • Online:2013-11-15 Published:2014-01-26

摘要: 结合某金矿露天转地下水平境界隔离矿柱置换回收工程实践,利用有限元数值分析软件GeoFBA建立数值计算模型,对该矿水平境界隔离矿柱采用工人充填体置换回收关键技术可行性及风险进行了分析评估,揭示了置换前后水平境界隔离矿柱及其对井下影响范围的应力分布规律和位移变形趋势,确定了最优的人工置换回收顺序。 模拟结果对矿山安全置换回收水平境界隔离矿柱具有重要的指导意义。

关键词: 露天转地下, 水平境界隔离矿柱, 置换, 回收

Abstract: In view of the engineering practice in replacement and recycling of horizontal-boundary isolating pillar during the transition from open pit to underground,the finite element analysis software GeoFBA is used to establish the numerical calculation model to evaluate the feasibility and risk of the key techniques for replacement and recycling of horizontal boundary isolating pillars with the artificial filling bodyThe stress distribution laws and displacement trends on the underground environment before or after the replacement of horizontal boundary isolating pillars are revealed,and the optimal artificial replacement and recycling sequences are determinedThe simulation results provide an important guiding for the safety replacement and recycling of the horizontal-boundary isolating pillars in the mine.

Key words: Transition from open pit to underground, Horizontal boundary isolating pillars, Replacement, Recycling