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Mechanism for Controlling Floor Heave of Mining Roadways Using Reinforcing Roof and Sidewalls in Underground Coal Mine

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  • Gangye Guo

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

  • Hongpu Kang

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China
    Coal Mining and Designing Branch, China Coal Research Institute, Beijing 100013, China)

  • 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)

  • Fuqiang Gao

    (Coal Mining and Designing Branch, China Coal Research Institute, Beijing 100013, China)

  • Yang Wang

    (School of Public Policy and Urban Affairs, College of Social Sciences and Humanities, Northeastern University, Boston, MA 02115, USA)

Abstract

Controlling floor heave plays an important role in the stability of mining roadways that is pivotal to the sustainable, safe, and efficient development of coal resources in underground coal mines. In order to propose highly efficient and economical methods of controlling floor heave, numerical simulation, laboratory physical simulation, and engineering practice were carried out to reveal the mechanism of reinforcing roof and sidewalls to control the floor heave of the mining roadway, return airway 15208, in the Xinjing Coal Mine in the Yanquan mining area of China. The numerical simulation demonstrated that the surrounding rock of the roadway underwent expansion and deformation, accompanied by redistribution of the surrounding rock stress due to the reinforcement of the roof and two sidewalls. The laboratory physical simulation revealed that the reinforcing roof and sidewalls decreased the bed separation of the floor and reduced the quantity of the displacement of the floor in Coal Seam 15. Engineering practice showed that the floor heave in the roadway, the roof, and the sidewalls, which was reinforced by intensive bolts combined with steel belt, wire mesh, and cable, was significantly reduced compared with that with lower supporting intensity of roof and sidewalls. The floor heave could be successfully controlled.

Suggested Citation

  • Gangye Guo & Hongpu Kang & Deyu Qian & Fuqiang Gao & Yang Wang, 2018. "Mechanism for Controlling Floor Heave of Mining Roadways Using Reinforcing Roof and Sidewalls in Underground Coal Mine," Sustainability, MDPI, vol. 10(5), pages 1-15, May.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:5:p:1413-:d:144362
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    References listed on IDEAS

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    Cited by:

    1. Wensheng Wei & Guojun Zhang & Chunyuan Li & Wenshuai Zhang & Yupeng Shen, 2023. "Mechanism and Control of Asymmetric Floor Heave in Deep Roadway Disturbed by Roof Fracture," Sustainability, MDPI, vol. 15(8), pages 1-21, April.
    2. Shuaigang Liu & Jianbiao Bai & Xiangyu Wang & Shuai Yan & Jiaxin Zhao, 2021. "Field and Numerical Study on Deformation and Failure Characteristics of Deep High-Stress Main Roadway in Dongpang Coal Mine," Sustainability, MDPI, vol. 13(15), pages 1-27, July.
    3. Piotr Małkowski & Łukasz Ostrowski & Jerzy Stasica, 2022. "Modeling of Floor Heave in Underground Roadways in Dry and Waterlogged Conditions," Energies, MDPI, vol. 15(12), pages 1-27, June.
    4. Yi Xue & Zhengzheng Cao & Feng Du & Lin Zhu, 2018. "The Influence of the Backfilling Roadway Driving Sequence on the Rockburst Risk of a Coal Pillar Based on an Energy Density Criterion," Sustainability, MDPI, vol. 10(8), pages 1-21, July.
    5. Housheng Jia & Luyao Wang & Kai Fan & Bo Peng & Kun Pan, 2019. "Control Technology of Soft Rock Floor in Mining Roadway with Coal Pillar Protection: A case study," Energies, MDPI, vol. 12(15), pages 1-21, August.
    6. Piotr Małkowski & Łukasz Ostrowski & Łukasz Bednarek, 2020. "The Effect of Selected Factors on Floor Upheaval in Roadways—In Situ Testing," Energies, MDPI, vol. 13(21), pages 1-23, October.

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