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A New Thin Seam Backfill Mining Technology and Its Application

Author

Listed:
  • Hengjie Luan

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China
    State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China)

  • Yujing Jiang

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China
    State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
    Graduate School of Engineering, Nagasaki University, Nagasaki 852-8521, Japan)

  • Huili Lin

    (China Coal Research Institute, Beijing 100013, China)

  • Yahua Wang

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China
    State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China)

Abstract

Backfill mining is an effective way to control ground subsidence and govern gangue. To solve the problem of thin coal seam mining under villages, a new thin seam backfill mining technology was proposed. This paper investigated a reasonable proportion of filling materials by experiments, designed the filling system and introduced key technologies for thin seam working face filling. Finally, an industrial test of thin seam backfill mining technology was carried out in the C1661 working face, Beixu Coal Mine. The results show that the developed filling material meets both the pumping liquidity and strength requirements of the filling body during the early and late stages. The design and equipment selection of the paste filling system were reasonable. By using the key technologies for thin seam working face filling, the time needed for working face filling, the connection and disconnection of the filling pipeline and gob-side entry retaining were all greatly shortened. The labor intensity of the workers was reduced, and the mechanization level of the mine was improved. A fill mining length of 480 m was successfully completed. With effective roof subsidence control, the ground subsidence can be reduced, and good results can be achieved. This study can contribute to the development of backfill mining in thin coal seams.

Suggested Citation

  • Hengjie Luan & Yujing Jiang & Huili Lin & Yahua Wang, 2017. "A New Thin Seam Backfill Mining Technology and Its Application," Energies, MDPI, vol. 10(12), pages 1-16, December.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:2023-:d:121286
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    References listed on IDEAS

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    1. Nan Zhou & Jixiong Zhang & Hao Yan & Meng Li, 2017. "Deformation Behavior of Hard Roofs in Solid Backfill Coal Mining Using Physical Models," Energies, MDPI, vol. 10(4), pages 1-20, April.
    2. Shaojie Chen & Dawei Yin & Fengwei Cao & Yong Liu & Kaiqiang Ren, 2016. "An overview of integrated surface subsidence-reducing technology in mining areas of China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(2), pages 1129-1145, March.
    3. Fengshan Ma & Haijun Zhao & Renmao Yuan & Jie Guo, 2015. "Ground movement resulting from underground backfill mining in a nickel mine (Gansu Province, China)," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 77(3), pages 1475-1490, July.
    4. Xinguo Zhang & Jia Lin & Jinxiao Liu & Fei Li & Zhenzhong Pang, 2017. "Investigation of Hydraulic-Mechanical Properties of Paste Backfill Containing Coal Gangue-Fly Ash and Its Application in an Underground Coal Mine," Energies, MDPI, vol. 10(9), pages 1-19, September.
    5. Shaojie Chen & Dawei Yin & Fengwei Cao & Yong Liu & Kaiqiang Ren, 2016. "An overview of integrated surface subsidence-reducing technology in mining areas of China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(2), pages 1129-1145, March.
    6. Yanli Huang & Jixiong Zhang & Wei Yin & Qiang Sun, 2017. "Analysis of Overlying Strata Movement and Behaviors in Caving and Solid Backfilling Mixed Coal Mining," Energies, MDPI, vol. 10(7), pages 1-16, July.
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    Cited by:

    1. Shuai Li & Zheng Yu & Haoxuan Yu & Xinmin Wang, 2022. "The Recent Progress China Has Made in High-Concentration Backfill," Sustainability, MDPI, vol. 14(5), pages 1-18, February.
    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.
    3. Dong Wang & Yujing Jiang & Xiaoming Sun & Hengjie Luan & Hui Zhang, 2019. "Nonlinear Large Deformation Mechanism and Stability Control of Deep Soft Rock Roadway: A Case Study in China," Sustainability, MDPI, vol. 11(22), pages 1-20, November.
    4. Hao Li & Boyang Zhang & Haibo Bai & Jianjun Wu & Qingbin Meng & Ning Xiao & Feng Li & Guangming Wu, 2018. "Surface Water Resource Protection in a Mining Process under Varying Strata Thickness—A Case Study of Buliangou Coal Mine, China," Sustainability, MDPI, vol. 10(12), pages 1-16, December.

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