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Stability Control for the Rheological Roadway by a Novel High-Efficiency Jet Grouting Technique in Deep Underground Coal Mines

Author

Listed:
  • Yuantian Sun

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Guichen Li

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Junfei Zhang

    (Department of Civil, Environmental and Mining Engineering, the University of Western Australia, Perth 6009, Australia)

  • Deyu Qian

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

In maintaining the efficiency of coal mining, the stability of roadway plays a significant role, as it is closely related to the production of coal and the safety of personnel. In deep underground coal mines, the rheological deformation of roadway normally occurs, which affects its service life. To address this problem, in this paper, a novel high-efficiency Jet Grouting (JG) technique was presented, and its control effect on roadway stability was investigated. A creep test of a coal specimen in a laboratory scale was performed, and its creep behavior was revealed. The rheology of the coal mass surrounding the roadway was further analyzed according to the field-monitoring results of roadway deformation. A time-dependent numerical model with a Burger-creep visco-plastic model (CVISC) was established and validated by comparing the calculated displacement with in-situ measurement. The JG technique was tested in the field, and its applicability and practicability were confirmed. According to the validated model and field test results of JG, a numerical model with CVISC by JG support was established to analyze the effect of JG on the roadway. The results showed that the JG support can effectively reduce roadway deformation, optimize stress conditions, and reduce the extent of the plastic zone around the roadway. The rheological properties of the soft coal roadway were constrained and long-term stability was ensured. This pioneering work can guide the application of JG for the stability control of roadways and promote the sustainability of coal mining efficiently.

Suggested Citation

  • Yuantian Sun & Guichen Li & Junfei Zhang & Deyu Qian, 2019. "Stability Control for the Rheological Roadway by a Novel High-Efficiency Jet Grouting Technique in Deep Underground Coal Mines," Sustainability, MDPI, vol. 11(22), pages 1-17, November.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:22:p:6494-:d:288242
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    References listed on IDEAS

    as
    1. Dawid Szurgacz & Jarosław Brodny, 2019. "Tests of Geometry of the Powered Roof Support Section," Energies, MDPI, vol. 12(20), pages 1-19, October.
    2. Zhiyi Zhang & Hideki Shimada & Takashi Sasaoka & Akihiro Hamanaka, 2017. "Stability Control of Retained Goaf-Side Gateroad under Different Roof Conditions in Deep Underground Y Type Longwall Mining," Sustainability, MDPI, vol. 9(10), pages 1-19, September.
    3. Dawid Szurgacz & Jarosław Brodny, 2019. "Analysis of the Influence of Dynamic Load on the Work Parameters of a Powered Roof Support’s Hydraulic Leg," Sustainability, MDPI, vol. 11(9), pages 1-13, May.
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    Cited by:

    1. Qingliang Chang & Yifeng Sun & Qiang Leng & Zexu Liu & Huaqiang Zhou & Yuantian Sun, 2021. "Stability Analysis of Paste Filling Roof by Cut and Fill Mining," Sustainability, MDPI, vol. 13(19), pages 1-14, September.
    2. Xiaoping Xie & Hongyang Liu & Xinqiu Fang & Junwei Yang & Jiangang Liu & Minfu Liang & Gang Wu, 2023. "Deformation Mechanism and Control Technology of Surrounding Rock of Three-Soft Coal Roadways under High Horizontal Stress," Energies, MDPI, vol. 16(2), pages 1-23, January.
    3. Xingkai Wang & Leibo Song & Caichu Xia & Guansheng Han & Zheming Zhu, 2021. "Nonlinear Elasto-Visco-Plastic Creep Behavior and New Creep Damage Model of Dolomitic Limestone Subjected to Cyclic Incremental Loading and Unloading," Sustainability, MDPI, vol. 13(22), pages 1-15, November.
    4. Peng Li & Xingping Lai & Peilin Gong & Chao Su & Yonglu Suo, 2020. "Mechanisms and Applications of Pressure Relief by Roof Cutting of a Deep-Buried Roadway near Goafs," Energies, MDPI, vol. 13(21), pages 1-16, November.
    5. Sen Yang & Guichen Li & Ruiyang Bi & Bicheng Yao & Ruiguang Feng & Yuantian Sun, 2021. "The Stability of Roadway Groups under Rheology Coupling Mining Disturbance," Sustainability, MDPI, vol. 13(21), pages 1-18, November.
    6. Yuantian Sun & Guichen Li & Junfei Zhang & Jiahui Xu, 2020. "Failure Mechanisms of Rheological Coal Roadway," Sustainability, MDPI, vol. 12(7), pages 1-17, April.
    7. Andrzej Gonet & Stanisław Stryczek & Marcin Kremieniewski, 2022. "Modern Methods of Strengthening and Sealing Salt Mines," Energies, MDPI, vol. 15(14), pages 1-12, July.
    8. Yuantian Sun & Guichen Li & Junfei Zhang & Junbo Sun & Jiandong Huang & Reza Taherdangkoo, 2021. "New Insights of Grouting in Coal Mass: From Small-Scale Experiments to Microstructures," Sustainability, MDPI, vol. 13(16), pages 1-17, August.

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