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金属矿山 ›› 2009, Vol. 39 ›› Issue (08): 122-125.

• 安全与环保 • 上一篇    下一篇

露天转地下开采覆盖层漏风特性的实验研究

杜翠凤1,王宾2,刘志军1,梅林芳2,盛建红1   

  1. 1.北京科技大学;2.武汉钢铁公司大冶铁矿
  • 出版日期:2009-08-17 发布日期:2011-04-26
  • 基金资助:

    国家“十一五”科技支撑重大计划项目(编号:2006BAB02A02)。

Experiment Study on the Air Leakage Characteristics of the Capping in  Underground Mining Turned from Open-Pit Mining

Du Cuifeng1,Wang Bin2,Liu Zhijun1,Mei Linfang2,Sheng Jianhong1   

  1. 1.University of Science and Technology Beijing;2.WuSteel Daye Iron Mine
  • Online:2009-08-17 Published:2011-04-26

摘要: 大冶铁矿是由露天转地下并采用崩落法开采的矿井,生产过程中地表漏风严重,导致井下通风困难。为控制地表漏风,拟通过回填崩落围岩和抛尾矿颗粒形成覆盖层。基于实验室相似模拟实验,对4种粒径岩石颗粒的孔隙率及覆盖层的漏风特性进行了研究,得到孔隙率与覆盖层高度的关系。其结果不仅为大冶铁矿确定覆盖层高度提供理论依据,而且对其他矿山也具有参考价值。

关键词: 覆盖层, 相似模拟实验, 漏风特性

Abstract: Daye is an underground mine turned from an open-pit one that adopts caving mining method.The serious air leakage from the surface ground during mining process has led to the difficulty in underground ventilation.It was planned to form a capping layer by backfilling with the fragmented rocks and the discarded tailings so as to control the ground air leakage.Based on the laboratory analogue simulation tests, the porosity of the rock particles of four sizes and the air leakage characteristics of the capping were studied and the relationship between the porosity and the cappping height was found, providing not only a theoretical basis for determining the capping height of Daye Iron Mine but also the reference to other similar mines.

Key words: Capping, Analog simulation experiment, Air leakage characteristic