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金属矿山 ›› 2010, Vol. 39 ›› Issue (12): 9-11.

• 采矿工程 • 上一篇    下一篇

小汪沟铁矿露天转地下覆盖层形成方法研究

李楠1,任凤玉1,赵云峰2,常帅1   

  1. 1.东北大学;2.西林钢铁集团灯塔矿业公司
  • 出版日期:2010-12-15 发布日期:2010-11-10

Study on the Formation of Overburden Layer during the Transition from  Open-pit to Underground Mining in Xiaowanggou Iron Mine

Li Nan1,Ren Fengyu1,Zhao Yunfeng2,Chang Shuai1   

  1. 1.Northeastern University;2.Dengta Mining Company of Xilin Iron & Steel Group
  • Online:2010-12-15 Published:2010-11-10

摘要: 小汪沟铁矿在露天转地下开采过程中,采用诱导边坡岩体自然冒落的方法形成覆盖层,有效地扩展了露天与井下同时生产的空间条件,实现了露天转地下增产衔接。详细介绍诱导冒落方案、工艺技术与实施效果,并分析了影响冒落进程的主要因素。

关键词: 露天转地下, 覆盖层, 诱导冒落

Abstract: During the transition from open-pit to underground mining in Xiaowanggou iron mine,overburden layer for sublevel caving is formed through the induced caving process of open-pit slope.This process is effective in extending space conditions of simultaneous open-pit and underground mining,and achieving the production increase during the transition from open-pit to underground mining.The paper describes the schemes,techniques and implementation of induced caving,and analyzes the main factor of affecting the caving process.

Key words: Transition from open-pit to underground, Overburden layer, Induced caving