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Time Effect of Water Injection on the Mechanical Properties of Coal and Its Application in Rockburst Prevention in Mining

Author

Listed:
  • Xiaofei Liu

    (Key Laboratory of Gas and Fire Control for Coal Mines (China University of Mining and Technology), Ministry of Education, Xuzhou 221116, China
    School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China)

  • Guang Xu

    (Department of Mining Engineering and Metallurgical Engineering, Western Australian School of Mines, Curtin University, Kalgoorlie, WA 6430, Australia)

  • Chong Zhang

    (Key Laboratory of Gas and Fire Control for Coal Mines (China University of Mining and Technology), Ministry of Education, Xuzhou 221116, China
    School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China)

  • Biao Kong

    (School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China)

  • Jifa Qian

    (Key Laboratory of Gas and Fire Control for Coal Mines (China University of Mining and Technology), Ministry of Education, Xuzhou 221116, China)

  • Dong Zhu

    (School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China)

  • Mingyao Wei

    (Institute of Rock and Soil Mechanic, Chinese Academy of Sciences, Wuhan 430071, China)

Abstract

Coal seam water injection is widely used to prevent rockbursts in coal mines, and the duration of water injection is an important parameter related to the effectiveness of rockburst prevention, making it of practical importance to optimize the effective water injection duration. This paper presents the test results of the mechanical properties and pore structure of samples with different soaking time, obtained from a working face where rockburst occurred. Soaking time changes the mechanical properties of samples, and this time effect differs with the coal size (from centimeter to nanometer size). Results of numerical simulation and on-site tests in the Changgouyu coal mine demonstrated that water injection can effectively soften coal bodies and release or transfer stresses, and the time effect of water injection on rock prevention and control is apparent.

Suggested Citation

  • Xiaofei Liu & Guang Xu & Chong Zhang & Biao Kong & Jifa Qian & Dong Zhu & Mingyao Wei, 2017. "Time Effect of Water Injection on the Mechanical Properties of Coal and Its Application in Rockburst Prevention in Mining," Energies, MDPI, vol. 10(11), pages 1-26, November.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:11:p:1783-:d:117744
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    Citations

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    Cited by:

    1. 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.
    2. Abdul Muntaqim Naji & Hafeezur Rehman & Muhammad Zaka Emad & Hankyu Yoo, 2018. "Impact of Shear Zone on Rockburst in the Deep Neelum-Jehlum Hydropower Tunnel: A Numerical Modeling Approach," Energies, MDPI, vol. 11(8), pages 1-16, July.
    3. Meng Wu & Yicheng Ye & Qihu Wang & Zhen Zhang & Yan Li & Wen Li, 2023. "Study on the Mechanisms of Rock Mass Watering for Rockburst Prevention in Phosphorite Mines from Laboratory Results," Sustainability, MDPI, vol. 15(11), pages 1-17, June.
    4. Xiaohan Yang & Ting Ren & Alex Remennikov & Xueqiu He & Lihai Tan, 2018. "Analysis of Energy Accumulation and Dissipation of Coal Bursts," Energies, MDPI, vol. 11(7), pages 1-10, July.

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