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Supervisor：Jiangxi University Of Science And Technology
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Jiangxi Nonferrous Metals Society
ISSN：1674-9669
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CODEN YJKYA9
Volume 13 Issue 3
Jun.  2022
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LIAO Baoquan, KE Yuxian, FANG Lifa, HU Kaijian, ZENG Jie, TAO Tiejun. Study on the moving deformation law of covered rock in paste backfill mining[J]. Nonferrous Metals Science and Engineering, 2022, 13(3): 99-105. DOI: 10.13264/j.cnki.ysjskx.2022.03.013
Citation: LIAO Baoquan, KE Yuxian, FANG Lifa, HU Kaijian, ZENG Jie, TAO Tiejun. Study on the moving deformation law of covered rock in paste backfill mining[J]. Nonferrous Metals Science and Engineering, 2022, 13(3): 99-105. DOI: 10.13264/j.cnki.ysjskx.2022.03.013
shu

Study on the moving deformation law of covered rock in paste backfill mining

  • 1.

    School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China

  • 2.

    College of Civil Engineering, Guizhou University, Guiyang 550025, China

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  • Received Date: September 15, 2021
  • Revised Date: October 23, 2021
  • Available Online: July 15, 2022
    Graphical Abstract
    • Abstract
  • To reveal the change pattern of the covered rock moving angle in paste backfill mining, FLAC3D was used to simulate the moving deformation characteristics of covered rock under the influence of different factors of paste backfill mining in a mine, and the moving angle of covered rock at different horizontal heights was studied based on the simulation calculation results. The results show that the higher the filling body gray-sand ratio and the higher the filling rate are, the smaller the surface subsidence amount and the smaller the development height of the covered rock risk deformation area. There is an exponential relationship between the development height of the covered rock risk deformation zone and the cement-sand ratio of the filler, and the covered rock moving angle increases linearly with the height of the covered rock from the roof. Combined with the regression analysis, the relationship between the covered rock moving angle and the height of the covered rock from the roof and the cement-sand ratio of the filler was established, which further revealed the change pattern of the covered rock moving angle in paste backfill mining and provided a certain basic theoretical basis for the reasonable determination of the covered rock moving angle in mines.
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    • References (24)
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