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A Strain-Softening Constitutive Model of Heterogeneous Rock Mass Considering Statistical Damage and Its Application in Numerical Modeling of Deep Roadways

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  • Guang Li

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
    Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Fengshan Ma

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
    Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China)

  • Gang Liu

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
    Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Haijun Zhao

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
    Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China)

  • Jie Guo

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
    Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China)

Abstract

During the construction of underground caverns, the stability of deep underground cavern excavation, which affects the safety and sustainable development of such projects, is a hot issue. First, based on the mechanical properties of surrounding rock in deep tunnels, the strain-softening behavior, damage, and heterogeneity of rock masses are analyzed. Then, a strain-softening model of heterogeneous jointed rock mass that considers statistical damage (SSD) is developed and implemented through FLAC3D simulation software. Finally, the SSD is applied to a deep roadway in the Jinchuan mining area, and a comparative analysis of the computation results of the Mohr–Coulomb (MC) model and the strain-softening (SS) model are carried out. The numerical results are compared with the field-monitoring results, which show that the SSD model simulated the behavior of the surrounding rocks well. The results show that the deformations of the roof and floor are larger, which may serve as a reference for the support pattern of deep roadways.

Suggested Citation

  • Guang Li & Fengshan Ma & Gang Liu & Haijun Zhao & Jie Guo, 2019. "A Strain-Softening Constitutive Model of Heterogeneous Rock Mass Considering Statistical Damage and Its Application in Numerical Modeling of Deep Roadways," Sustainability, MDPI, vol. 11(8), pages 1-19, April.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:8:p:2399-:d:225100
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    References listed on IDEAS

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    1. Fengshan Ma & Haijun Zhao & Renmao Yuan & Jie Guo, 2015. "Ground movement resulting from underground backfill mining in a nickel mine (Gansu Province, China)," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 77(3), pages 1475-1490, July.
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    Cited by:

    1. Guang Li & Fengshan Ma & Jie Guo & Haijun Zhao, 2021. "Case Study of Roadway Deformation Failure Mechanisms: Field Investigation and Numerical Simulation," Energies, MDPI, vol. 14(4), pages 1-15, February.
    2. Guang Li & Rong Lu & Fengshan Ma & Jie Guo, 2022. "Analysis of Acoustic Emission Characteristics and Failure Mode of Deep Surrounding Rock of Sanshandao Gold Mine," IJERPH, MDPI, vol. 19(20), pages 1-16, October.
    3. Houqiang Yang & Changliang Han & Nong Zhang & Yuantian Sun & Dongjiang Pan & Changlun Sun, 2020. "Long High-Performance Sustainable Bolt Technology for the Deep Coal Roadway Roof: A Case Study," Sustainability, MDPI, vol. 12(4), pages 1-14, February.

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