Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2011, Vol. 32 ›› Issue (11): 1647-1650.DOI: -

• OriginalPaper • Previous Articles     Next Articles

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.
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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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