东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (11): 1647-1650.DOI: -

• 论著 • 上一篇    下一篇

龙桥铁矿复杂采空区的探测及处理方案

李海洲;杨天鸿;张洪海;丁铭;   

  1. 东北大学资源与土木工程学院;烟台黄金设计研究所;龙桥铁矿;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50874024,10872046,50904013,51174045);;

Detection and disposal of the complex goaf in Longqiao iron mine

Li, Hai-Zhou (1); Yang, Tian-Hong (1); Zhang, Hong-Hai (2); Ding, Ming (3)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China; (2) Yantai Gold Design Institute, Yantai 264000, China; (3) Longqiao Iron Mine, Lujiang 231500, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Li, H.-Z.
  • About author:-
  • Supported by:
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摘要： 安徽省庐江县龙桥铁矿-320 m水平采空区,发生局部塌落导致现有采空区形态不详,为保证下部矿体正常安全开采,在地表不允许塌落的情况下,采用留设隔离矿柱的方案来隔离上部采空区.在钻孔探测确定采空区形态的基础上,应用FLAC3D程序建立三维数字模型,分析了留设不同厚度隔离层对整个采空区应力分布的影响及自身稳定程度.结果表明:留设25 m厚的水平隔离矿柱可以有效地分担地压分布情况,能够保证下部矿体安全开采.

关键词: 采矿工程, 采空区探测, 稳定性, FLAC3D, 数值模拟

Abstract: Local goaf collapse at -320 m level in Longqiao Iron Mine has caused the unknown goaf shape. Under the condition of unpermitted surface subsidence, in order to ensure the deep ore bodies safety, the interval layer should be remained. Based on the drilling detection, the goaf shape was definitely known, and then the FLAC3D was applied to analyzing the influence of stress distribution in the whole goaf under the conditions of different interval layer thickness. The results showed that the 25 m interval layer remained in next level can effectively alleviate stress distribution. It can also ensure the mining safety at the next level.

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