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Numerical Modeling on the Fracturing and Energy Evolution of Large Deep Underground Openings Subjected to Dynamic Disturbance

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  • Chun Yang

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China
    Research Center for Mining Engineering and Technology in Cold Regions, Central South University, Changsha 410083, China)

  • Keping Zhou

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China
    Research Center for Mining Engineering and Technology in Cold Regions, Central South University, Changsha 410083, China)

  • Zhichao Li

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China)

  • Xin Xiong

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China
    Research Center for Mining Engineering and Technology in Cold Regions, Central South University, Changsha 410083, China)

  • Yun Lin

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China
    Research Center for Mining Engineering and Technology in Cold Regions, Central South University, Changsha 410083, China)

  • Zengwu Luo

    (Guangxi Gaofeng Mine Co. Ltd., Hechi 547205, China)

Abstract

The exploitation of deep resources is necessary for human development. At the same time, high-stress environments that are deep underground bring about great challenges vis-à-vis resource exploitation. A large deep opening is sensitive to high ground stress, and is easily influenced by external interference, which can lead to geologically hazardous occurrences. To investigate the evolution of fracturing and energy in large, deep stopes subjected to dynamic loads, we established a numerical model of a stope in the Gaofeng mine. Using ANSYS/LS-DYNA software, we implemented an implicit solution to initial static stress and an explicit solution for dynamic analysis. Based on our numerical results, we obtained the fracture behavior and energy evolution under coupled static and dynamic loads. To determine the response of ground pressure to mining activity, a 24-channel microseismic monitoring system was designed for the Gaofeng mine based on the numerical analysis.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:22:p:6102-:d:449068
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    References listed on IDEAS

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    Cited by:

    1. Li Cheng & Qinzheng Wu & Haotian Li & Kexu Chen & Chunlong Wang & Xingquan Liu & Xuelong Li & Jingjing Meng, 2022. "Safety and Protection Measures of Underground Non-Coal Mines with Mining Depth over 800 m: A Case Study in Shandong, China," Sustainability, MDPI, vol. 14(20), pages 1-16, October.

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