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金属矿山 ›› 2010, Vol. 39 ›› Issue (02): 46-54.

• 采矿工程 • 上一篇    下一篇

镜铁山矿无底柱分段崩落法放矿方法的实践

 吕向东, 杨作华   

  1. 酒泉钢铁(集团)公司
  • 出版日期:2010-02-15 发布日期:2010-11-09

Practice on Ore-drawing Method with Pillarless Sublevel Caving in Jingtieshan Mine

Lv Xiang-Dong , YANG  Zuo-Hua   

  1. Jiuquan Iron and Steel Group Corporation
  • Online:2010-02-15 Published:2010-11-09

摘要: 结合镜铁山矿桦树沟矿区应用截止品位放矿和无(低)贫化放矿工艺存在的问题,分析了截止品位放矿、无(低)贫化放矿的缺陷。总结提出了截止品位和出矿总量控制相结合的放矿方法,经过6年的实践证明,矿石出矿品位稳定,回采率得以大幅度提高,可供同类矿山借鉴参考。

关键词: 地下铁矿, 无底柱分段崩落法, 放矿

Abstract: In combination with some problems on application of cut-off grade ore drawing and no(low) dilution ore-drawing process in Huashugou mining area of Jingtieshan Mine, the defects on the cut-off grade ore, no(low) dilution drawing are analyzed.A combined ore-drawing method of the cut-off ore grade and ore out-let control was proposed.After six years of practice, the ore grade from mine is kept stably and the recovery rates are significantly increased, which is available for reference of similar mines.

Key words: Underground iron ore, Pillarless sublevel caving, Ore drawing