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A Simulation Experimental Study on the Advance Support Mechanism of a Roadway Used with the Longwall Coal Mining Method

Author

Listed:
  • Hui Liu

    (Shenmu Ningtiaota Coal Mining Company Ltd., Shaanxi Coal and Chemical Industry Group Company Ltd., Yulin 719300, China
    All authors contributed equally to this work.)

  • Zhenhua Jiang

    (Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology-Beijing, Beijing 100083, China
    Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China
    All authors contributed equally to this work.)

  • Wansheng Chen

    (Shenmu Ningtiaota Coal Mining Company Ltd., Shaanxi Coal and Chemical Industry Group Company Ltd., Yulin 719300, China)

  • Fei Chen

    (Shenmu Ningtiaota Coal Mining Company Ltd., Shaanxi Coal and Chemical Industry Group Company Ltd., Yulin 719300, China)

  • Fenglin Ma

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

  • Donghao Li

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

  • Zhaoyang Liu

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

  • Hongke Gao

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

Abstract

Aiming to advance a support problem for roadways used with the longwall coal mining method, the S1202 working face of the Ningtiaota Coal Mine is taken as the engineering background. The monitoring and analysis of bolt force, anchor cable force and surrounding rock deformation of two types of roadways within the whole advance pressure influence range are carried out in the present paper. Based on this, a numerical calculation model consistent with the field is established, and numerical comparison tests under different influencing factors are carried out. The rationality of the numerical test results is verified by using the field monitoring data. At the same time, quantitative evaluation indexes, such as characterization deformation, are established, and the deformation law of roadways surrounding rocks under different advance passive support forces is analyzed. The advance support mechanism of the roadway used with the longwall coal mining method is clarified. The test shows that under the condition of no advance passive support, the maximum characteristic deformation of surrounding rock in the haulage roadway and ventilation roadway is 7.1 cm and 10.1 cm, respectively. The above surrounding rock deformation still meets the requirements of on-site safety production. The research results can provide experimental support for the advance support parameters of the roadway used with the longwall coal mining method.

Suggested Citation

  • Hui Liu & Zhenhua Jiang & Wansheng Chen & Fei Chen & Fenglin Ma & Donghao Li & Zhaoyang Liu & Hongke Gao, 2022. "A Simulation Experimental Study on the Advance Support Mechanism of a Roadway Used with the Longwall Coal Mining Method," Energies, MDPI, vol. 15(4), pages 1-10, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:4:p:1366-:d:748867
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    References listed on IDEAS

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    1. Haojie Xue & Yubing Gao & Xingyu Zhang & Xichun Tian & Haosen Wang & Di Yuan, 2019. "Directional Blasting Fracturing Technology for the Stability Control of Key Strata in Deep Thick Coal Mining," Energies, MDPI, vol. 12(24), pages 1-19, December.
    2. Yong Chen & Shuqi Ma & Yugui Yang & Ningkang Meng & Jianbiao Bai, 2019. "Application of Shallow-Hole Blasting in Improving the Stability of Gob-Side Retaining Entry in Deep Mines: A Case Study," Energies, MDPI, vol. 12(19), pages 1-16, September.
    3. Bo Wang & Sitao Zhu & Fuxing Jiang & Jinhai Liu & Xiaoguang Shang & Xiufeng Zhang, 2020. "Investigating the Width of Isolated Coal Pillars in Deep Hard-Strata Mines for Prevention of Mine Seismicity and Rockburst," Energies, MDPI, vol. 13(17), pages 1-18, August.
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    Cited by:

    1. Krzysztof Skrzypkowski & Krzysztof Zagórski & Anna Zagórska & Derek B. Apel & Jun Wang & Huawei Xu & Lijie Guo, 2022. "Choice of the Arch Yielding Support for the Preparatory Roadway Located near the Fault," Energies, MDPI, vol. 15(10), pages 1-21, May.

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