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Analysis of influence of filling body with different filling intervals on stope stability

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  • Chunming Ai
  • Anju Yu
  • Li Zhang
  • Yingbo Wen

Abstract

The stratified backfill will lead to the reduction of the strength of the filling body, thus increasing the safety risks of the stope. By means of experimental research and numerical simulation, the stability of stope is studied. Based on the physical parameters of filling body measured by triaxial compression test, the stability of filling stope is numerically simulated by FLAC 3D software. By comparing the stress distribution and displacement of stope with filling body at different intervals, the filling process parameters of Bianjiadayuan lead-zn-silver mine can be optimized.The experimental results show that: When the filling interval is 12h, the roof stress, filling body pressure stress and roof displacement are small, and the stope stability is better. When it exceeds 12h, the change is large and the stope stability is poor. The interval time in the stratified backfill process of Bianjiadayuan lead-zinc-silver mine should not exceed 12h.The research results have significant reference value for improving the stope stability and selecting a reasonable interval time for stratified backfill.

Suggested Citation

  • Chunming Ai & Anju Yu & Li Zhang & Yingbo Wen, 2024. "Analysis of influence of filling body with different filling intervals on stope stability," PLOS ONE, Public Library of Science, vol. 19(2), pages 1-12, February.
    • Handle: RePEc:plo:pone00:0293499
    DOI: 10.1371/journal.pone.0293499
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