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Evolution of Interior and Exterior Bearing Structures of the Deep-Soft-Rock Roadway: From Theory to Field Test in the Pingdingshan Mining Area

Author

Listed:
  • Qingxian Huang

    (School of Mines, the Jiangsu Engineering Laboratory of Mining-Induced Seismicity Monitoring, China University of Mining and Technology, Xuzhou 221116, China
    China Pingmei Shenma Energy Chemical Group Co., Ltd., Pingdingshan 467000, China)

  • Xufeng Wang

    (School of Mines, the Jiangsu Engineering Laboratory of Mining-Induced Seismicity Monitoring, China University of Mining and Technology, Xuzhou 221116, China
    State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China)

  • Xuyang Chen

    (School of Mines, the Jiangsu Engineering Laboratory of Mining-Induced Seismicity Monitoring, China University of Mining and Technology, Xuzhou 221116, China
    State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China)

  • Dongdong Qin

    (School of Mines, the Jiangsu Engineering Laboratory of Mining-Induced Seismicity Monitoring, China University of Mining and Technology, Xuzhou 221116, China
    State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China)

  • Zechao Chang

    (School of Mines, the Jiangsu Engineering Laboratory of Mining-Induced Seismicity Monitoring, China University of Mining and Technology, Xuzhou 221116, China
    State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

Pingdingshan mining area is one of the typical deep mining areas in China, and most of the mines in this area are troubled by the difficulties of the deep-soft-rock roadway support. Based on the concept of synergistic interactions of the interior and exterior bearing structure of the surrounding rock and, considering the specific geological conditions of the research site, we establish the mechanical model of the interior and exterior bearing structure of the roadway. Based on numerical simulation, we reveal the influence of main factors, such as support strength and mechanical characteristics, of surrounding rock on the distribution and evolution of the interior and exterior bearing structure. We found that increasing the support strength and mechanical parameters of surrounding rock can make the exterior bearing structure close to the roadway enhance the bearing characteristics of the interior and exterior bearing structure and improve the roadway stability. The distribution characteristics of the interior and exterior bearing structure of the roadway under six different support strengths and six different grouting parameters were systematically investigated by field measurements. According to the field test results, an effective strategy for controlling the deep-soft-rock roadway is proposed, which provides a good reference for surrounding rock control of the deep-soft-rock roadway in the Pingdingshan mining area and mines with similar mining conditions.

Suggested Citation

  • Qingxian Huang & Xufeng Wang & Xuyang Chen & Dongdong Qin & Zechao Chang, 2020. "Evolution of Interior and Exterior Bearing Structures of the Deep-Soft-Rock Roadway: From Theory to Field Test in the Pingdingshan Mining Area," Energies, MDPI, vol. 13(17), pages 1-19, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:17:p:4357-:d:403177
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    References listed on IDEAS

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    1. Dongdong Qin & Xufeng Wang & Dongsheng Zhang & Xuyang Chen, 2019. "Study on Surrounding Rock-Bearing Structure and Associated Control Mechanism of Deep Soft Rock Roadway Under Dynamic Pressure," Sustainability, MDPI, vol. 11(7), pages 1-15, March.
    2. Xiaojie Yang & Eryu Wang & Yajun Wang & Yubing Gao & Pu Wang, 2018. "A Study of the Large Deformation Mechanism and Control Techniques for Deep Soft Rock Roadways," Sustainability, MDPI, vol. 10(4), pages 1-20, April.
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    Cited by:

    1. Yongshui Kang & Congcong Hou & Jingyi Liu & Zhi Geng & Jianben Chen & Bin Liu, 2021. "Numerical Analyses on the Stability of a Deep Coalmine Roadway Passing through a Fault Zone: A Case Study of the Gugui Coalfield in China," Energies, MDPI, vol. 14(8), pages 1-15, April.
    2. Paweł Boroń & Joanna Maria Dulińska & Dorota Jasińska, 2021. "Two-Step Finite Element Model Tuning Strategy of a Bridge Subjected to Mining-Triggered Tremors of Various Intensities Based on Experimental Modal Identification," Energies, MDPI, vol. 14(8), pages 1-26, April.
    3. Yu Xiong & Dezhong Kong & Zhanbo Cheng & Zhijie Wen & Zhenqian Ma & Guiyi Wu & Yong Liu, 2021. "Instability Control of Roadway Surrounding Rock in Close-Distance Coal Seam Groups under Repeated Mining," Energies, MDPI, vol. 14(16), pages 1-19, August.

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