Mechanical Calculation and Proportion Optimization for Paste Backfill of Upward Horizontal Slice Stope-Filling Method in Underground Mine

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Authors

  • Song Jiang
     School of Management, Xi’an University of Architecture and Technology, Shaanxi, 710055 ,CN
  • Minjie Lian
     Sinosteel Mining Co., Ltd, Beijing,100080 ,CN
  • Wen Zhang
     College of Materials & Mineral Resources, Xi’an University of Architecture and Technology, Shaanxi, 710055 ,CN

Keywords:

Backfill Mechanics, Cement-Tailings Ratio, Strength Design, Tailing Backfill, Upward Horizontal Slice Stope-Filling Method.

Abstract

To improve mining production capacity, the upward horizontal slice stope-filling method (UHSSF) is employed at the LI Guanji iron mine. The height of the stage stope is approximately 100m and the height of layered backfill is 6m. At present, there is no systematic research on the mechanism of layered backfill in high-level mining. The strength design of backfill is mainly carried out by use of the experience method or the analogical method which often leads to cement being wasted or the strength being lower than that of the engineering requirements. According to the site-specific geological and mining conditions, the action mechanisms of backfill in different roles such as work platform and supporting roof were analysed. The corresponding strength models were developed by referring to the elastic and plastic theories. The analytical method for designing the required strength of backfill was obtained accordingly. The models and analytical methods have been applied in strength design and optimization of the cement-tailings ratios for backfill in the No.3 stope of the LI Guanji iron mine. It is concluded that the strength design method is reasonable and reliable, as well as conducive to saving filling costs.

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Published

2022-10-19

How to Cite

Jiang, S., Lian, M., & Zhang, W. (2022). Mechanical Calculation and Proportion Optimization for Paste Backfill of Upward Horizontal Slice Stope-Filling Method in Underground Mine. Journal of Mines, Metals and Fuels, 64(12), 708–717. Retrieved from https://www.informaticsjournals.com/index.php/jmmf/article/view/31640

Issue

Volume 64, Issue 12, December 2016

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

 

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