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

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Abstract

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.

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Authors and Affiliations

  1. School of Resources and Safety Engineering, Central South University, Changsha, 410083, China

    Deng Jian PhD  (邓建) (Professor), Li Xi-bing  (李夕兵), Zhao Guo-yan  (赵国彦) & Wang Xin-min  (王新民)

  2. School of Business, Central South University, Changsha, 410083, China

    Bian Li  (边利)

Authors
  1. Deng Jian PhD  (邓建)
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  2. Bian Li  (边利)
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  3. Li Xi-bing  (李夕兵)
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  4. Zhao Guo-yan  (赵国彦)
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  5. Wang Xin-min  (王新民)
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Corresponding author

Correspondence to Deng Jian PhD  (邓建).

Additional information

Foundation item: Projects(50574098, 50404010) supported by the National Natural Science Foundation of China; project(05jj10010) supported by the Hunan Provincial Natural Science Foundation of Distinguished Young Scholars

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Deng, J., Bian, L., Li, Xb. et al. Analysis of factors and countermeasures of mining subsidence in Kaiyang Phosphorus Mine. J Cent. South Univ. Technol. 13, 733–737 (2006). https://doi.org/10.1007/s11771-006-0023-7

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  • DOI: https://doi.org/10.1007/s11771-006-0023-7

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