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金属矿山 ›› 2018, Vol. 47 ›› Issue (01): 42-46.

• 采矿工程 • 上一篇    下一篇

阿尔哈达铅锌矿728 m中段采空区顶柱回收方案研究

贾瀚文1,周亚博2,刘龙2,刘溪鸽1,闫保旭1   

  1. 1.东北大学资源与土木工程学院,辽宁 沈阳110819;2.锡林郭勒盟山金阿尔哈达矿业有限公司,内蒙古 锡林郭勒 026000
  • 出版日期:2018-01-15 发布日期:2018-03-13
  • 基金资助:

    基金项目:国家重点研发计划项目(编号:2016YFC0801607),国家杰出青年科学基金项目(编号:51525402),国家自然科学基金项目(51534003,51374049)。

Research of Mining Method for Recovering Cap Pillar of Goaf at 728 m Level in A′erhada Pb-Zn Mine

Jia Hanwen1,Zhou Yabo2,Liu Long2,Liu Xige1,Yan Baoxu1   

  1. 1.School of Resources & Civil Engineering,Northeastern University,Shenyang 110819,China;2.XilinGol Shangdong Gold Group A′erhada Minerals Co.,Ltd.,XilinGol 026000,China
  • Online:2018-01-15 Published:2018-03-13

摘要: 针对阿尔哈达铅锌矿728 m中段采空区下方回收顶柱存在的技术及安全问题,提出了中深孔崩落法采矿方法,介绍了顶柱回收方案的采场结构、采切工程、回采工艺等技术参数,确定在采场两翼掘凿切割天井,两翼后退式落矿的顶柱回收方案。采用FLAC3D软件分析顶柱及上下盘在回采过程中应力、位移及塑性区变化规律。数值计算结果表明所提出的顶柱回收方案是合理的,为顶柱回采提供了理论依据,具有重要的实践意义。

关键词: 顶柱回收, 采矿方法, 崩落法, FLAC3D

Abstract: Considering the safety and technical problems for recovering cap pillars at 728 m level of goaf in A′erhada Pb-Zn Mine,a block caving scheme of medium-length hole was proposed.Technical parameters of the scheme including stope structural parameters,mining projects,and stoping process were introduced.The cap pillar recovery process with raise shaft cutting and pullback caving at wings was determined.Then,FLAC3D software was adopted to analyze the variation regularity of stress,displacement and plastic zone at top pillar and the upper and lower plates in the recovery process.The numerical results show that the proposed cap pillar recovery scheme is reasonable,which provides a theoretical basis for the recovery of top pillars with an important practical significance.

Key words: Cap pillar recovery, Mining method, Block caving, FLAC3D