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Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects

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  • Huichen Xu

    (College of Mechanical and Architectural Engineering, Taishan University, Taian 271000, China
    State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China)

  • Xiaoming Sun

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China)

  • Yong Zhang

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China)

  • Chengwei Zhao

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China)

  • Chengyu Miao

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China)

  • Dong Wang

    (State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China)

Abstract

Affected by the “three highs and one disturbance” (high ground pressure, high ground temperature, high permeability pressure, and strong mining disturbance), deep layered rock mass roadways often display large deformations, resulting in accidents and disasters from time to time. This paper aims to study creep characteristics of layered rock masses after water absorption due to structural effects, combined with acoustic emission energy and dominant frequency value analysis. Experimental results show that as the water content decreases, the long-term strength of the rock sample increases, and the damage becomes more severe. Under the same water content state conditions, the rock samples with bedding angles of 0°, 30°, and 90° have high long-term strength and undergo severe failure, whereas rock samples with bedding angles of 45° and 60° have low long-term strength and undergo mild failure. Under the same water content, the initial energy release increases with the bedding angle. Under the same water content, the energy release during failure decreases first and then increases with the increasing bedding angle. The initial energy, the cumulative energy, the initial main frequency, and the main frequency at the time of failure tend to decrease with the increase in water content.

Suggested Citation

  • Huichen Xu & Xiaoming Sun & Yong Zhang & Chengwei Zhao & Chengyu Miao & Dong Wang, 2023. "Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects," IJERPH, MDPI, vol. 20(5), pages 1-18, February.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:5:p:4055-:d:1079144
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    References listed on IDEAS

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    1. Lin Gao & Xinyu Zhan & Pandong Zhang & Zhijie Wen & Zhenqian Ma & Dezhong Kong & Xiangtao Kang & Sen Han, 2022. "Study on the Dip Angle Effect of Asymmetric Deformation and Failure of the Gob-Side Coal–Rock Roadway in Gently Inclined Coal Seam," Sustainability, MDPI, vol. 14(12), pages 1-15, June.
    2. Krzysztof Skrzypkowski & Krzysztof Zagórski & Anna Zagórska, 2021. "Determination of the Extent of the Rock Destruction Zones around a Gasification Channel on the Basis of Strength Tests of Sandstone and Claystone Samples Heated at High Temperatures up to 1200 °C and ," Energies, MDPI, vol. 14(20), pages 1-27, October.
    3. Xuelong Li & Xinyuan Zhang & Wenlong Shen & Qingdong Zeng & Peng Chen & Qizhi Qin & Zhen Li, 2023. "Research on the Mechanism and Control Technology of Coal Wall Sloughing in the Ultra-Large Mining Height Working Face," IJERPH, MDPI, vol. 20(1), pages 1-17, January.
    4. Przemyslaw Michal Wilczynski & Andrzej Domonik & Pawel Lukaszewski, 2021. "Brittle Creep and Viscoelastic Creep in Lower Palaeozoic Shales from the Baltic Basin, Poland," Energies, MDPI, vol. 14(15), pages 1-22, July.
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