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Characteristics of Pore and Fracture of Coal with Bursting Proneness Based on DIC and Fractal Theory

Author

Listed:
  • Yutao Li

    (School of Mechanics & Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Yixin Zhao

    (School of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
    Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Yaodong Jiang

    (School of Mechanics & Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Bo Zhang

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

  • Honghua Song

    (School of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Bin Liu

    (School of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

Abstract

Coal is a complex heterogeneous and anisotropic material conformed with fractal characteristics. The pore and fracture characteristics have important influence on the dynamic disasters including rock burst and gas outburst, however, the relationship between them is not accurately investigated due to inadequate research method. The pore and fracture distribution of coal with different bursting proneness were obtained by comprehensive application of MIP, LTNAD, SEM, and X-ray CT, and then fractal theory and DIC were used to research the pore and fracture characteristics. The result indicated that the modification of MIP result by LTNAD result could effectively eliminate the adverse effect of coal matrix compressibility, exactly reflect the distribution of pore and fracture in coal, and the pore distribution of coal with different bursting proneness were quite different. Gray scale image from SEM and 3D reconstruction technology based on X-ray CT could show the geological structure, fracture structure, and pore structure characteristics of coal. The study of LTNAD, SEM, and X-ray CT showed that these methods complemented each other, the coal had fractal properties, and the fractal dimension value had a positive correlation with the bursting proneness of coal sample.

Suggested Citation

  • Yutao Li & Yixin Zhao & Yaodong Jiang & Bo Zhang & Honghua Song & Bin Liu, 2020. "Characteristics of Pore and Fracture of Coal with Bursting Proneness Based on DIC and Fractal Theory," Energies, MDPI, vol. 13(20), pages 1-19, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:20:p:5404-:d:429132
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    Citations

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    Cited by:

    1. Xing Zeng & Weiqiang Li & Jue Hou & Wenqi Zhao & Yunyang Liu & Yongbo Kang, 2022. "Fractal Characteristics of Pore-Throats Structure and Quality Evaluation of Carbonate Reservoirs in Eastern Margin of Pre-Caspian Basin," Energies, MDPI, vol. 15(17), pages 1-13, August.
    2. Wu, Mingqiu & Li, Haitao & Wang, Liang & Yang, Xinlei & Dai, Chongyang & Yang, Ning & Li, Jie & Wang, Yu & Yu, Minggao, 2023. "μCT quantitative assessment of the pore–fracture structures and permeability behaviors of long-flame coal treated by infrared rapid heating," Energy, Elsevier, vol. 274(C).
    3. Weitao Liu & Yueyun Qin & Xiangxi Meng & Lifu Pang & Mengke Han & Zengmou Song, 2021. "Basic Experimental Study of Plasticity Material for Coal Rock Fracture Grouting Based on RSM-PCA Technology," Energies, MDPI, vol. 14(15), pages 1-20, July.

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