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Application of Pre-Splitting and Roof-Cutting Control Technology in Coal Mining: A Review of Technology

Author

Listed:
  • Shengrong Xie

    (School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Yiyi Wu

    (School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Fangfang Guo

    (School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Hang Zou

    (School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Dongdong Chen

    (School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Xiao Zhang

    (School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Xiang Ma

    (School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Ruipeng Liu

    (School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Chaowen Wu

    (School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China)

Abstract

According to the development requirements of green mining of coal resources, it is imperative to improve the extraction rate of coal and the application of safe and efficient mining technology. Pre-splitting and roof cutting technology is widely used in reducing residual coal pillars and safe pressure relief mining, which has become the crucial technology for pillar-free mining methods. Therefore, it is essential to review and discuss the research hotspots, cutting-edge methods, principles of action, and application areas of the development of this technology. Above all, the research data on pre-splitting and roof-cutting development in the past ten years are summarized and outlined. The research’s hot spots are pressure relief technology and gob-side entry retaining technology. Then, the functional forms of pre-splitting and roof cutting technology are discussed and compared, including explosive blasting (directional energy gathering blasting, liquid explosive blasting, and composite blasting), hydraulic fracturing, liquid CO 2 gas fracturing, and mechanized roof cutting (chain arm saw machine and directional cutting roof rig). Through the analysis of field application cases, the application field is divided into three major areas: non-coal pillar mining (gob-side entry driving with narrow coal pillar, gob-side entry retaining with the filling body, completely gob-side entry retaining, and “N00” construction method), pressure relief at working face (thick and hard main roof cracking and end area hard roof cracking), and pressure relief at roadway (gob-side roadway pressure relief and blasting pressure relief technology for roadways). By detailing the process of each application technology one by one, the principle and mode of pre-splitting in each technology are expounded. Finally, the development prospects of pre-splitting and roof cutting in new technical methods, deep pressure relief mining, intelligent unmanned mining, and green and efficient mining are prospected, providing references for similar projects.

Suggested Citation

  • Shengrong Xie & Yiyi Wu & Fangfang Guo & Hang Zou & Dongdong Chen & Xiao Zhang & Xiang Ma & Ruipeng Liu & Chaowen Wu, 2022. "Application of Pre-Splitting and Roof-Cutting Control Technology in Coal Mining: A Review of Technology," Energies, MDPI, vol. 15(17), pages 1-20, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6489-:d:907462
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    References listed on IDEAS

    as
    1. Xiaoyu Liu & Manchao He & Jiong Wang & Zimin Ma, 2021. "Research on Non-Pillar Coal Mining for Thick and Hard Conglomerate Roof," Energies, MDPI, vol. 14(2), pages 1-14, January.
    2. Xingen Ma & Manchao He & Jiandong Sun & Haohao Wang & Xiaoyu Liu & Enze Zhen, 2018. "Neural Network of Roof Cutting Blasting Parameters Based on Mines with Different Roof Conditions," Energies, MDPI, vol. 11(12), pages 1-22, December.
    3. 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.
    4. Zhibiao Guo & Haohao Wang & Zimin Ma & Pengfei Wang & Xiaohui Kuai & Xianzhe Zhang, 2021. "Research on the Transmission of Stresses by Roof Cutting near Gob Rocks," Energies, MDPI, vol. 14(5), pages 1-24, February.
    5. Deyuan Fan & Xuesheng Liu & Yunliang Tan & Shilin Song & Qingheng Gu & Lei Yan & Qiang Xu, 2019. "Roof Cutting Parameters Design for Gob-Side Entry in Deep Coal Mine: A Case Study," Energies, MDPI, vol. 12(10), pages 1-25, May.
    6. Zimin Ma & Jiong Wang & Manchao He & Yubing Gao & Jinzhu Hu & Qiong Wang, 2018. "Key Technologies and Application Test of an Innovative Noncoal Pillar Mining Approach: A Case Study," Energies, MDPI, vol. 11(10), pages 1-22, October.
    7. Shengrong Xie & Fangfang Guo & Yiyi Wu, 2022. "Control Techniques for Gob-Side Entry Driving in an Extra-Thick Coal Seam with the Influence of Upper Residual Coal Pillar: A Case Study," Energies, MDPI, vol. 15(10), pages 1-21, May.
    8. Hui Li & Haodong Zu & Kanglin Zhang & Jifa Qian, 2022. "Study on Filling Support Design and Ground Pressure Monitoring Scheme for Gob-Side Entry Retention by Roof Cutting and Pressure Relief in High-Gas Thin Coal Seam," IJERPH, MDPI, vol. 19(7), pages 1-21, March.
    9. Yajun Wang & Yubing Gao & Eryu Wang & Manchao He & Jun Yang, 2018. "Roof Deformation Characteristics and Preventive Techniques Using a Novel Non-Pillar Mining Method of Gob-Side Entry Retaining by Roof Cutting," Energies, MDPI, vol. 11(3), pages 1-17, March.
    10. Jinzhu Hu & Manchao He & Jiong Wang & Zimin Ma & Yajun Wang & Xingyu Zhang, 2019. "Key Parameters of Roof Cutting of Gob-Side Entry Retaining in a Deep Inclined Thick Coal Seam with Hard Roof," Energies, MDPI, vol. 12(5), pages 1-19, March.
    11. Xingen Ma & Manchao He & Jiong Wang & Yubing Gao & Daoyong Zhu & Yuxing Liu, 2018. "Mine Strata Pressure Characteristics and Mechanisms in Gob-Side Entry Retention by Roof Cutting under Medium-Thick Coal Seam and Compound Roof Conditions," Energies, MDPI, vol. 11(10), pages 1-25, September.
    12. 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.
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    Cited by:

    1. Dongdong Chen & Jingkun Zhu & Qiucheng Ye & Xiang Ma & Shengrong Xie & Wenke Guo & Zijian Li & Zhiqiang Wang & Shaohua Feng & Xiangxiang Yan, 2023. "Application of Gob-Side Entry Driving in Fully Mechanized Caving Mining: A Review of Theory and Technology," Energies, MDPI, vol. 16(6), pages 1-26, March.
    2. Shengrong Xie & Hui Li & Dongdong Chen & Shaohua Feng & Xiang Ma & Zaisheng Jiang & Junqi Cui, 2022. "New Technology of Pressure Relief Control in Soft Coal Roadways with Deep, Violent Mining and Large Deformation: A Key Study," Energies, MDPI, vol. 15(23), pages 1-26, December.
    3. Fulian He & Bingquan Liu & Deqiu Wang & Dongdong Chen & Yanhao Wu & Liming Song & Xiang Ma & Qiucheng Ye & Zaisheng Jiang & Fangfang Guo & Weiguang Wang & Yiyi Wu, 2022. "Study on Stability and Control of Surrounding Rock in the Stopping Space with Fully Mechanized Top Coal Caving under Goaf," Energies, MDPI, vol. 15(22), pages 1-22, November.

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