IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v12y2019i17p3316-d261754.html
   My bibliography  Save this article

Study of An Innovative Approach of Roof Presplitting for Gob-Side Entry Retaining in Longwall Coal Mining

Author

Listed:
  • Xingyu Zhang

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Beijing 100083, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing 100083, China
    Department of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309, USA)

  • Liang Chen

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221116, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology, Xuzhou 221116, China)

  • Yubing Gao

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Beijing 100083, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing 100083, China)

  • Jinzhu Hu

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Beijing 100083, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing 100083, China)

  • Jun Yang

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Beijing 100083, China
    School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing 100083, China)

  • Manchao He

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

Abstract

Gob-side entry retaining (GER) is a hot issue with regard to saving resources and reducing the drivage ratio in longwall mining. This paper investigates an innovative approach of roof presplitting for gob-side entry retaining (RPGER). RPGER uses the directional cumulative blasting to split the roof in advance. The rock roof within the presplitting range caves in gob after mining. The caved gangue can become the natural rib of the gob-side entry and expands to be the natural supporting body for resisting the upper roof movement. A numerical model of RPGER was established by the discrete element method (DEM), which showed that the supporting effect by the expanded gangue was well functioning. The gob-side entry was in pressure-relief surroundings and featured in the lesser deformation. The roof presplitting design method was presented and validated with a field test. The test illustrated that RPGER reduced the mining pressure on the retained entry side. The expanded gangue on the entry side was gradually compacted. It is the compaction process that played the role of reliving mining pressure, and the compacted gangue became the effective rib of the gob-side entry. The retained entry in the pressure-relief surroundings would stabilize a lagging distance behind the working face. The gob-side entry after stabilization met the entry retaining and the safety production requirements. This work illustrates the mechanism of RPGER and validates its feasibility and efficiency.

Suggested Citation

  • Xingyu Zhang & Liang Chen & Yubing Gao & Jinzhu Hu & Jun Yang & Manchao He, 2019. "Study of An Innovative Approach of Roof Presplitting for Gob-Side Entry Retaining in Longwall Coal Mining," Energies, MDPI, vol. 12(17), pages 1-16, August.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:17:p:3316-:d:261754
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/12/17/3316/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/12/17/3316/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Roman Mendelevitch & Christian Hauenstein & Franziska Holz, 2019. "The Death Spiral of Coal in the USA: Will New U.S. Energy Policy Change the Tide?," Discussion Papers of DIW Berlin 1790, DIW Berlin, German Institute for Economic Research.
    2. Stougie, Lydia & Tsalidis, Georgios A. & van der Kooi, Hedzer J. & Korevaar, Gijsbert, 2018. "Environmental and exergetic sustainability assessment of power generation from biomass," Renewable Energy, Elsevier, vol. 128(PB), pages 520-528.
    3. 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.
    4. Manchao He & Yubing Gao & Jun Yang & Weili Gong, 2017. "An Innovative Approach for Gob-Side Entry Retaining in Thick Coal Seam Longwall Mining," Energies, MDPI, vol. 10(11), pages 1-22, November.
    5. Wolde-Rufael, Yemane, 2010. "Coal consumption and economic growth revisited," Applied Energy, Elsevier, vol. 87(1), pages 160-167, January.
    6. Peng Gong & Zhanguo Ma & Xiaoyan Ni & Ray Ruichong Zhang, 2017. "Floor Heave Mechanism of Gob-Side Entry Retaining with Fully-Mechanized Backfilling Mining," Energies, MDPI, vol. 10(12), pages 1-19, December.
    7. Wang, Qiang & Li, Rongrong, 2017. "Decline in China's coal consumption: An evidence of peak coal or a temporary blip?," Energy Policy, Elsevier, vol. 108(C), pages 696-701.
    8. 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.
    9. 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.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    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. Zhenghu Li & Junhui Zhang & Hui Chen & Xiuzhi Shi & Yanyang Zhang & Yanjun Zhang, 2022. "A Safe and Efficient Mining Method with Reasonable Stress Release and Surface Ecological Protection," Sustainability, MDPI, vol. 14(9), pages 1-12, April.
    3. Zhaowen Du & Shaojie Chen & Junbiao Ma & Zhongping Guo & Dawei Yin, 2020. "Gob-Side Entry Retaining Involving Bag Filling Material for Support Wall Construction," Sustainability, MDPI, vol. 12(16), pages 1-20, August.
    4. Yongkang Yang & Peipeng Gao & Chao Zhang & Chenlong Wang, 2023. "Numerical Investigation of the Influence of Roof-Cutting Parameters on the Stability of Top Coal Gob-Side Entry Retaining by Roof Pre-Fracturing in Ultra-Thick Coal Seam," Energies, MDPI, vol. 16(12), pages 1-20, June.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Zhibiao Guo & Weitao Li & Songyang Yin & Dongshan Yang & Zhibo Ma, 2021. "An Innovative Technology for Monitoring the Distribution of Abutment Stress in Longwall Mining," Energies, MDPI, vol. 14(2), pages 1-22, January.
    2. 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.
    3. 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.
    4. Xinshuai Shi & Hongwen Jing & Zhenlong Zhao & Yuan Gao & Yuanchao Zhang & Ruodi Bu, 2020. "Physical Experiment and Numerical Modeling on the Failure Mechanism of Gob-Side Entry Driven in Thick Coal Seam," Energies, MDPI, vol. 13(20), pages 1-24, October.
    5. Zhenqian Ma & Dongyue Zhang & Yunqin Cao & Wei Yang & Biao Xu, 2022. "Study of Key Technology of Gob-Side Entry Retention in a High Gas Outburst Coal Seam in the Karst Mountain Area," Energies, MDPI, vol. 15(11), pages 1-21, June.
    6. 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.
    7. 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.
    8. 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.
    9. Magazzino, Cosimo & Mele, Marco & Schneider, Nicolas, 2021. "A machine learning approach on the relationship among solar and wind energy production, coal consumption, GDP, and CO2 emissions," Renewable Energy, Elsevier, vol. 167(C), pages 99-115.
    10. Wenqiang Mu & Lianchong Li & Zhongping Guo & Zhaowen Du & Sixu Wang, 2019. "Novel Segmented Roadside Plugging-Filling Mining Method and Overlying Rock Mechanical Mechanism Analyses," Energies, MDPI, vol. 12(11), pages 1-20, May.
    11. Chai, Jian & Du, Mengfan & Liang, Ting & Sun, Xiaojie Christine & Yu, Ji & Zhang, Zhe George, 2019. "Coal consumption in China: How to bend down the curve?," Energy Economics, Elsevier, vol. 80(C), pages 38-47.
    12. Apergis, Nicholas & Payne, James E., 2010. "Coal consumption and economic growth: Evidence from a panel of OECD countries," Energy Policy, Elsevier, vol. 38(3), pages 1353-1359, March.
    13. Magazzino, Cosimo & Mele, Marco & Schneider, Nicolas, 2021. "A D2C algorithm on the natural gas consumption and economic growth: Challenges faced by Germany and Japan," Energy, Elsevier, vol. 219(C).
    14. Udi Joshua & Festus V. Bekun & Samuel A. Sarkodie, 2020. "New Insight into the Causal Linkage between Economic Expansion, FDI, Coal consumption, Pollutant emissions and Urbanization in South Africa," Working Papers 20/011, European Xtramile Centre of African Studies (EXCAS).
    15. Qiong Wang & Zhibiao Guo & Chun Zhu & Songyang Yin & Dawei Yin, 2021. "The Deformation Characteristics and Lateral Stress of Roadside Crushed Rocks with Different Particles in Non-Pillar Coal Mining," Energies, MDPI, vol. 14(13), pages 1-14, June.
    16. Yang, Qing & Zhang, Lei & Zhang, Jinsuo & Zou, Shaohui, 2021. "System simulation and policy optimization of China's coal production capacity deviation in terms of the economy, environment, and energy security," Resources Policy, Elsevier, vol. 74(C).
    17. Wang, Qiang & Song, Xiaoxin, 2021. "How UK farewell to coal – Insight from multi-regional input-output and logarithmic mean divisia index analysis," Energy, Elsevier, vol. 229(C).
    18. Michieka, Nyakundi M. & Fletcher, Jerald & Burnett, Wesley, 2013. "An empirical analysis of the role of China’s exports on CO2 emissions," Applied Energy, Elsevier, vol. 104(C), pages 258-267.
    19. Siqi Li & Rongrong Li, 2017. "Energy Sustainability Evaluation Model Based on the Matter-Element Extension Method: A Case Study of Shandong Province, China," Sustainability, MDPI, vol. 9(11), pages 1-9, November.
    20. Zafar, Muhammad Wasif & Shahbaz, Muhammad & Hou, Fujun & Sinha, Avik, 2018. "¬¬¬¬¬¬From Nonrenewable to Renewable Energy and Its Impact on Economic Growth: Silver Line of Research & Development Expenditures in APEC Countries," MPRA Paper 90611, University Library of Munich, Germany, revised 10 Dec 2018.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:12:y:2019:i:17:p:3316-:d:261754. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.