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Gob-Side Entry Retained with Soft Roof, Floor, and Seam in Thin Coal Seams: A Case Study

Author

Listed:
  • Zhijun Tian

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China)

  • Zizheng Zhang

    (Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Goal Mines, Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Min Deng

    (School of Resource, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Shuai Yan

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China)

  • Jianbiao Bai

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

Gob-side entry retained technology is of great significance to develop coal mining industry sustainably, which can improve the coal recovery rate by mining without the coal pillar. However, scholars and researchers pay little attention to the gob-side entry retained with soft roof, floor, and seam in thin coal seams. In this study, the difficulties and key points of surrounding rock control for gob-side entry retained with soft roof, floor, and seam in thin coal seams were firstly proposed. Secondly, the mechanical model of the interaction between the roadside backfill body and the roof for gob-side entry retained with soft roof, floor, and seam in thin coal seams was established, and the relevant parameters were designed. Finally, the above results were verified by the engineering practice of gob-side entry retained technology and the monitoring of mine pressure on the 1103 working face of the Heilong Coal Mine. Moreover, the effect factors of surrounding rock stability for gob-side entry retained with soft roof, floor, and seam in thin coal seams were discussed using the discrete element method. The results could provide guidance for gob-side entry retained with soft roof, floor, and seam in thin coal seams under similar geological conditions.

Suggested Citation

  • Zhijun Tian & Zizheng Zhang & Min Deng & Shuai Yan & Jianbiao Bai, 2020. "Gob-Side Entry Retained with Soft Roof, Floor, and Seam in Thin Coal Seams: A Case Study," Sustainability, MDPI, vol. 12(3), pages 1-22, February.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:3:p:1197-:d:317768
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    References listed on IDEAS

    as
    1. Hengjie Luan & Yujing Jiang & Huili Lin & Guofeng Li, 2018. "Development of a New Gob-Side Entry-Retaining Approach and Its Application," Sustainability, MDPI, vol. 10(2), pages 1-15, February.
    2. Zizheng Zhang & Xianyang Yu & Hai Wu & Min Deng, 2019. "Stability Control for Gob-Side Entry Retaining with Supercritical Retained Entry Width in Thick Coal Seam Longwall Mining," Energies, MDPI, vol. 12(7), pages 1-16, April.
    3. 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.
    4. Hong-sheng Wang & Dong-sheng Zhang & Lang Liu & Wei-bin Guo & Gang-wei Fan & KI-IL Song & Xu-feng Wang, 2016. "Stabilization of Gob-Side Entry with an Artificial Side for Sustaining Mining Work," Sustainability, MDPI, vol. 8(7), pages 1-17, July.
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    Cited by:

    1. Zhiqiang Wang & Jiao Zhang & Jingkai Li & Peng Wang & Chao Wu & Lei Shi, 2022. "Research of Surrounding Rock Control of Gob-Side Entry Retaining Based on Deviatoric Stress Distribution Characteristics," Sustainability, MDPI, vol. 14(9), pages 1-21, May.
    2. Xuming Zhou & Haotian Li & Xuelong Li & Jianwei Wang & Jingjing Meng & Mingze Li & Chengwei Mei, 2022. "Research on Gob-Side Entry Retaining Mining of Fully Mechanized Working Face in Steeply Inclined Coal Seam: A Case in Xinqiang Coal Mine," Sustainability, MDPI, vol. 14(16), pages 1-16, August.

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