Journal of Central South University of Technology

, Volume 13, Issue 6, pp 733–737 | Cite as

Analysis of factors and countermeasures of mining subsidence in Kaiyang Phosphorus Mine

  • Deng Jian  (邓建)Email author
  • Bian Li  (边利)
  • Li Xi-bing  (李夕兵)
  • Zhao Guo-yan  (赵国彦)
  • Wang Xin-min  (王新民)


Ground crack and subsidence were investigated in Kaiyang Phosphorus Mine as an example. Contribution factors to cause ground crack and mining subsidence were studied, including mining method, mining depth and ore thickness and stope size, dip angle of orebody, geological structure, nature of overburden and water contents, and roof supports, etc. Countermeasures against cracks and subsidence were put forward. The uniaxial compressive strength of compounded phosphorus gypsum after 28 d of curing period was tested to be more than 1 MPa. Phosphorus gypsum can be used as materials for the backfill of stope. By comparison and numerical simulation, cut and fill mining method with middle-deep drilling holes and ore transportation by blasting force was selected as the optimum mining method in Kaiyang Phosphorus Mine.

Key words

mining subsidence ground crack cut and fill mining method Kaiyang Phosphorus Mine 

CLC number

TU457 TU452 


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Copyright information

© Published by: Central South University Press, Sole distributor outside Mainland China: Springer 2006

Authors and Affiliations

  • Deng Jian  (邓建)
    • 1
    Email author
  • Bian Li  (边利)
    • 2
  • Li Xi-bing  (李夕兵)
    • 1
  • Zhao Guo-yan  (赵国彦)
    • 1
  • Wang Xin-min  (王新民)
    • 1
  1. 1.School of Resources and Safety EngineeringCentral South UniversityChangshaChina
  2. 2.School of BusinessCentral South UniversityChangshaChina

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