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The Compressive Behavior of Cemented Tailings Backfill under the Action of Different Curing Temperature and Age

  • ROCK FAILURE
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Journal of Mining Science Aims and scope

Abstract

During the backfilling mining process, the strength of backfilling body is continuously affected by the temperature. Unconfined compressive strength (UCS) tests were performed on cemented tailings backfill (CTB) samples cured at different temperatures. The results show that UCS increases linearly with the increase of curing temperature during the age of 3 to 7 days, while it shows an exponential relationship with the curing temperature during the age of 7 to 28 days and the growth rate gradually slows down. As the curing temperature and age increases, the microstructure becomes denser, meanwhile, UCS becomes more sensitive to variances in age, and the failure patterns of CTB samples change from crushing failure to tensile failure. The established formula can well describe the coupling effect of curing temperature and age on UCS, which can provide a certain reference for CTB strength design and mining.

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Authors and Affiliations

  1. College of Electromechanical Engineering, Qingdao University of Science and Technology, 266061, Qingdao, China

    Lizhuang Cui, Yongyan Wang & Zhuoqun Yu

  2. Key Laboratory of Geotechnical and Underground Engineering, Ministry of Education and Department of Geotechnical Engineering, Tongji University, 200092, Shanghai, China

    Yonggang Zhang

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  1. Lizhuang Cui
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  2. Yongyan Wang
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  3. Zhuoqun Yu
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Correspondence to Lizhuang Cui, Yongyan Wang, Zhuoqun Yu or Yonggang Zhang.

Additional information

Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2021, No. 4, pp. 49-62. https://doi.org/10.15372/FTPRPI20210405.

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Cui, L., Wang, Y., Yu, Z. et al. The Compressive Behavior of Cemented Tailings Backfill under the Action of Different Curing Temperature and Age. J Min Sci 57, 581–594 (2021). https://doi.org/10.1134/S1062739121040050

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  • DOI: https://doi.org/10.1134/S1062739121040050

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