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Mechanism Analysis of Roadway Rockbursts Induced by Dynamic Mining Loading and Its Application

Author

Listed:
  • Zheng-yi Wang

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Lin-ming Dou

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Gui-feng Wang

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

Roadway rockbursts seriously restrict the safety production of coal mines; however, the interaction between dynamic loads and roadway surrounding rocks has not been fully considered in existing studies. A dynamic failure analysis model of anchoring supporting structures was established to analyze dynamic effects of stress waves. Taking a rockburst in LW402103 of the Hujiahe coal mine as the case, the theoretical model was well applied and verified. The static cumulative resistance Q s (210.5 kN) which was incurred by deformation of rocks provided the basis (81.93% in the overall real-time resistance Q ) of dynamic failures. However, the additional impact resistance Q d (46.43 kN) brought about by the energy release in the failure process of elastic zones triggered impact failures. As a result, under conditions that the overall real-time resistance Q (256.93 kN) exceeded the ultimate resistance [ Q ] (250.8 kN), the dynamic failure of supports occurred. The in situ application was implemented by taking pressure-relief measures and parameter optimizations of roadway supports, which achieved an effective prevention of rockbursts.

Suggested Citation

  • Zheng-yi Wang & Lin-ming Dou & Gui-feng Wang, 2018. "Mechanism Analysis of Roadway Rockbursts Induced by Dynamic Mining Loading and Its Application," Energies, MDPI, vol. 11(9), pages 1-24, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:9:p:2313-:d:167331
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    Citations

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    Cited by:

    1. Chun Yang & Keping Zhou & Zhichao Li & Xin Xiong & Yun Lin & Zengwu Luo, 2020. "Numerical Modeling on the Fracturing and Energy Evolution of Large Deep Underground Openings Subjected to Dynamic Disturbance," Energies, MDPI, vol. 13(22), pages 1-18, November.
    2. Zhengzheng Xie & Nong Zhang & Fanfei Meng & Changliang Han & Yanpei An & Ruojun Zhu, 2019. "Deformation Field Evolution and Failure Mechanisms of Coal–Rock Combination Based on the Digital Speckle Correlation Method," Energies, MDPI, vol. 12(13), pages 1-14, June.
    3. Guangliang Feng & Guoqing Xia & Bingrui Chen & Yaxun Xiao & Ruichen Zhou, 2019. "A Method for Rockburst Prediction in the Deep Tunnels of Hydropower Stations Based on the Monitored Microseismicity and an Optimized Probabilistic Neural Network Model," Sustainability, MDPI, vol. 11(11), pages 1-17, June.
    4. Shifan Zhao & Mingshi Gao & Dong Xu & Xin Yu & Hongchao Zhao, 2023. "Fracture Characteristics of Thick-Roof Coal Roadway Subjected to Duplicated Shock Waves," Sustainability, MDPI, vol. 15(6), pages 1-15, March.
    5. Guo, Yong & Yang, Fuqiang, 2023. "Mining safety research in China: Understanding safety research trends and future demands for sustainable mining industry," Resources Policy, Elsevier, vol. 83(C).
    6. Heng Zhang & Liang Chen & Shougen Chen & Jianchun Sun & Jiasong Yang, 2018. "The Spatiotemporal Distribution Law of Microseismic Events and Rockburst Characteristics of the Deeply Buried Tunnel Group," Energies, MDPI, vol. 11(12), pages 1-21, November.
    7. Piotr Bańka & Adam Lurka & Łukasz Szuła, 2023. "Ground Motion Prediction of High-Energy Mining Seismic Events: A Bootstrap Approach," Energies, MDPI, vol. 16(10), pages 1-15, May.
    8. Guangliang Feng & Manqing Lin & Yang Yu & Yu Fu, 2020. "A Microseismicity-Based Method of Rockburst Intensity Warning in Deep Tunnels in the Initial Period of Microseismic Monitoring," Energies, MDPI, vol. 13(11), pages 1-15, May.
    9. Zhiqiang Zhang & Chun Luo & Heng Zhang & Ruikai Gong, 2020. "Rockburst Identification Method Based on Energy Storage Limit of Surrounding Rock," Energies, MDPI, vol. 13(2), pages 1-24, January.
    10. Houqiang Yang & Changliang Han & Nong Zhang & Changlun Sun & Dongjiang Pan & Minghui Dong, 2019. "Stability Control of a Goaf-Side Roadway under the Mining Disturbance of an Adjacent Coal Working Face in an Underground Mine," Sustainability, MDPI, vol. 11(22), pages 1-18, November.

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