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Large-Deformation Failure Mechanism and Stability Control of a Swelling Soft Rock Roadway in a Sea Area: A Case Study in Eastern China

Author

Listed:
  • Ling Dong

    (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)

  • 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
    State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Xiaoming Sun

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

  • Yujing Jiang

    (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)

  • Hengjie Luan

    (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)

  • Huichen Xu

    (College of Mechanical and Architectural Engineering, Taishan University, Taian 271000, China)

  • Baocheng Li

    (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)

  • Feng Cai

    (China National Coal Group Corporation, Beijing 100120, China)

Abstract

Coal mining in sea areas has higher requirements for geological support systems, technical equipment levels, and safety production capacities because of the complex engineering geological conditions of underwater coal mines. In this paper, the deformation failure mechanism and stability control of a typical swelling soft rock roadway in the Beizao coal mine in a sea area are studied. A series of mechanical experiments and theoretical analyses were conducted to research the mechanical properties and reasons for the deformation failure of the swelling soft rock roadway. The type of the large-deformation failure mechanism of the soft rock roadway was identified as type III ABC , which could be converted to a simple one, such as type II B . The proposed stability control measure, containing constant-resistance large-deformation bolts, steel mesh, floor hollow grouting cables, and steel fiber concrete, was applied to the site. A good supporting effect was achieved, which could provide a beneficial reference for swelling soft rock roadways in sea areas.

Suggested Citation

  • Ling Dong & Dong Wang & Xiaoming Sun & Yujing Jiang & Hengjie Luan & Huichen Xu & Baocheng Li & Feng Cai, 2023. "Large-Deformation Failure Mechanism and Stability Control of a Swelling Soft Rock Roadway in a Sea Area: A Case Study in Eastern China," Sustainability, MDPI, vol. 15(6), pages 1-12, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:6:p:5323-:d:1099796
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    References listed on IDEAS

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    1. Manchao He & Yubing Gao & Jun Yang & Weili Gong, 2017. "An Innovative Approach for Gob-Side Entry Retaining in Thick Coal Seam Longwall Mining," Energies, MDPI, vol. 10(11), pages 1-22, November.
    2. Zhibiao Guo & Haohao Wang & Zimin Ma & Pengfei Wang & Xiaohui Kuai & Xianzhe Zhang, 2021. "Research on the Transmission of Stresses by Roof Cutting near Gob Rocks," Energies, MDPI, vol. 14(5), pages 1-24, February.
    3. Dong Wang & Yujing Jiang & Xiaoming Sun & Hengjie Luan & Hui Zhang, 2019. "Nonlinear Large Deformation Mechanism and Stability Control of Deep Soft Rock Roadway: A Case Study in China," Sustainability, MDPI, vol. 11(22), pages 1-20, November.
    4. Fan Feng & Zhiwei Xie & Tianxi Xue & Eryu Wang & Ruifeng Huang & Xuelong Li & Shixian Gao, 2023. "Application of a Combined FEM/DEM Approach for Teaching a Deep Rock Mass Mechanics Course," Sustainability, MDPI, vol. 15(2), pages 1-11, January.
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    Cited by:

    1. Lugen Chen & Dong Wang & Yujing Jiang & Hengjie Luan & Guangchao Zhang & Bin Liang, 2023. "Experimental Study on Mechanical Properties and Acoustic Emission Characteristics of Dry and Water-Saturated Soft Rocks under Different Dynamic Loadings," Sustainability, MDPI, vol. 15(17), pages 1-17, September.

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