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Creep Properties of Altered Rock Subjected to Water Influx-Lost Cycles

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Abstract

Creep properties of altered granite were changed due to water level rise and fall in the tailings ponds. In this paper, the effects of water influx-lost cycles on the creep properties were tested. The axial load was applied with the 30%, 40%, 60%, 75% and 100% of the triaxial compressive strength, the rock creep test results showed that: (1) Significant creep effects of altered granite subjected to water influx-lost cycles, the creep stages were included decay creep stage, steady creep stage, and accelerated creep stage. It was found that the creep strain gradually increases with of the number of water influx-lost cycles increases, and the ratio of the maximum creep strain to total strain can reach 10.42%. (2) The degradation of long-term strength of altered granite subjected to water influx-lost cycles was studied, the long-term strength was decreased from 32.13 to 5.46 MPa. The relationship between the long-term strength and number of cycles was indicated by an exponential function. It was found that water influx-lost cycles have adversely effects on the long-term stability of the tailing pond slope, and the research results are of great significance to the prevention of slope engineering disasters.

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Acknowledgements

This paper is supported by the Fundamental Research Funds for the Central Universities (2020YJS112). The financial aid is gratefully acknowledged.

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Authors and Affiliations

  1. School of Civil Engineering, Beijing Jiaotong University, Beijing, 100044, China

    Xuxin Chen

  2. Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China

    Zhe Qin

  3. School of Civil Engineering and Architecture, Linyi University, Linyi, 276000, China

    Houli Fu

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  1. Xuxin Chen
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  2. Zhe Qin
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  3. Houli Fu
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Correspondence to Xuxin Chen.

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The authors (Xuxin Chen, Zhe Qin, Houli Fu,) declare that there are no conflicts of interest regarding the publication of this paper.

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Chen, X., Qin, Z. & Fu, H. Creep Properties of Altered Rock Subjected to Water Influx-Lost Cycles. Geotech Geol Eng 39, 5085–5094 (2021). https://doi.org/10.1007/s10706-021-01814-y

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  • DOI: https://doi.org/10.1007/s10706-021-01814-y

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