IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v12y2019i22p4236-d284265.html
   My bibliography  Save this article

Dynamic Mechanical and Microstructural Properties of Outburst-Prone Coal Based on Compressive SHPB Tests

Author

Listed:
  • Zhenhua Yang

    (College of Mining, Liaoning Technical University, Fuxin 123000, China)

  • Chaojun Fan

    (College of Mining, Liaoning Technical University, Fuxin 123000, China)

  • Tianwei Lan

    (College of Mining, Liaoning Technical University, Fuxin 123000, China
    State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Sheng Li

    (College of Mining, Liaoning Technical University, Fuxin 123000, China)

  • Guifeng Wang

    (State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Mingkun Luo

    (College of Mining, Liaoning Technical University, Fuxin 123000, China
    Center of Technology, Shanxi Lu’an Mining (Group) Limited Liability Company, Changzhi 046299, China)

  • Hongwei Zhang

    (College of Mining, Liaoning Technical University, Fuxin 123000, China)

Abstract

Understanding the dynamic mechanical behaviors and microstructural properties of outburst-prone coal is significant for preventing coal and gas outbursts during underground mining. In this paper, the split Hopkinson pressure bar (SHPB) tests were completed to study the strength and micro-structures of outburst-prone coal subjected to compressive impact loading. Two suites of coals—outburst-prone and outburst-resistant—were selected as the experimental specimens. The characteristics of dynamic strength, failure processes, fragment distribution, and microstructure evolution were analyzed based on the obtained stress-strain curves, failed fragments, and scanning electron microscopy (SEM) and nuclear magnetic resonance (NMR) images. Results showed that the dynamic compressive strength inclined linearly with the applied strain rate approximately. The obtained dynamic stress-strain responses could be represented by a typical curve with stages of compression, linear elasticity, microcrack evolution, unstable crack propagation, and rapid rapture. When the loading rate was relatively low, fragments fell in tension. With an increase in loading rates, the fragments fell predominantly in shear. The equivalent particle size of coal fragments decreased with the applied strain rate. The Uniaxial compressive strength (UCS) of outburst-prone coal was smaller than that of resistant coal, resulting in its smaller equivalent particle size of coal fragments. Moreover, the impact loading accelerated the propagation of fractures within the specimen, which enhanced the connectivity within the porous coal. The outburst-prone coal with behaviors of low strength and sudden increase of permeability could easily initiate gas outbursts.

Suggested Citation

  • Zhenhua Yang & Chaojun Fan & Tianwei Lan & Sheng Li & Guifeng Wang & Mingkun Luo & Hongwei Zhang, 2019. "Dynamic Mechanical and Microstructural Properties of Outburst-Prone Coal Based on Compressive SHPB Tests," Energies, MDPI, vol. 12(22), pages 1-16, November.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:22:p:4236-:d:284265
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/12/22/4236/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/12/22/4236/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Yi Xue & Feng Gao & Xingguang Liu, 2015. "Effect of damage evolution of coal on permeability variation and analysis of gas outburst hazard with coal mining," 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. 79(2), pages 999-1013, November.
    2. Kaiwen Xia & Sheng Huang & Ajay Kumar Jha, 2010. "Dynamic Tensile Test of Coal, Shale and Sandstone Using Split Hopkinson Pressure Bar: A Tool for Blast and Impact Assessment," International Journal of Geotechnical Earthquake Engineering (IJGEE), IGI Global, vol. 1(2), pages 24-37, July.
    3. Fan, Chaojun & Elsworth, Derek & Li, Sheng & Zhou, Lijun & Yang, Zhenhua & Song, Yu, 2019. "Thermo-hydro-mechanical-chemical couplings controlling CH4 production and CO2 sequestration in enhanced coalbed methane recovery," Energy, Elsevier, vol. 173(C), pages 1054-1077.
    4. Li, He & Shi, Shiliang & Lin, Baiquan & Lu, Jiexin & Ye, Qing & Lu, Yi & Wang, Zheng & Hong, Yidu & Zhu, Xiangnan, 2019. "Effects of microwave-assisted pyrolysis on the microstructure of bituminous coals," Energy, Elsevier, vol. 187(C).
    5. Skoczylas Norbert & Anna Pajdak & Katarzyna Kozieł & Leticia Teixeira Palla Braga, 2019. "Methane Emission during Gas and Rock Outburst on the Basis of the Unipore Model," Energies, MDPI, vol. 12(10), pages 1-22, May.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Pinghe Sun & Meng Han & Han Cao & Weisheng Liu & Shaohe Zhang & Junyi Zhu, 2020. "Development and Performance Evaluation of Solid-Free Drilling Fluid for CBM Reservoir Drilling in Central Hunan," Energies, MDPI, vol. 13(18), pages 1-16, September.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Yuxuan Zhou & Shugang Li & Yang Bai & Hang Long & Yuchu Cai & Jingfei Zhang, 2023. "Joint Characterization and Fractal Laws of Pore Structure in Low-Rank Coal," Sustainability, MDPI, vol. 15(12), pages 1-19, June.
    2. Haijun Guo & Zhixiang Cheng & Kai Wang & Baolin Qu & Liang Yuan & Chao Xu, 2020. "Coal permeability evolution characteristics: Analysis under different loading conditions," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 10(2), pages 347-363, April.
    3. Wenjie Xu & Xigui Zheng & Cancan Liu & Peng Li & Boyang Li & Kundai Michael Shayanowako & Jiyu Wang & Xiaowei Guo & Guowei Lai, 2022. "Numerical Simulation Study of High-Pressure Air Injection to Promote Gas Drainage," Sustainability, MDPI, vol. 14(21), pages 1-15, October.
    4. Zhao, Li & Guanhua, Ni & Yan, Wang & Hehe, Jiang & Yongzan, Wen & Haoran, Dou & Mao, Jing, 2022. "Semi-homogeneous model of coal based on 3D reconstruction of CT images and its seepage-deformation characteristics," Energy, Elsevier, vol. 259(C).
    5. Yongzan, Wen & Guanhua, Ni & Xinyue, Zhang & Yicheng, Zheng & Gang, Wang & Zhenyang, Wang & Qiming, Huang, 2023. "Fine characterization of pore structure of acidified anthracite based on liquid intrusion method and Micro-CT," Energy, Elsevier, vol. 263(PA).
    6. Zhang, Chaolin & Wang, Enyuan & Li, Bobo & Kong, Xiangguo & Xu, Jiang & Peng, Shoujian & Chen, Yuexia, 2023. "Laboratory experiments of CO2-enhanced coalbed methane recovery considering CO2 sequestration in a coal seam," Energy, Elsevier, vol. 262(PA).
    7. Wang, Kai & Wang, Yanhai & Xu, Chao & Guo, Haijun & Xu, Zhiyuan & Liu, Yifu & Dong, Huzi & Ju, Yang, 2023. "Modeling of multi-field gas desorption-diffusion in coal: A new insight into the bidisperse model," Energy, Elsevier, vol. 267(C).
    8. Lan, Wenjian & Wang, Hanxiang & Zhang, Xin & Fan, Hongbo & Feng, Kun & Liu, Yanxin & Sun, Bingyu, 2020. "Investigation on the mechanism of micro-cracks generated by microwave heating in coal and rock," Energy, Elsevier, vol. 206(C).
    9. Bai, Gang & Su, Jun & Zhang, Zunguo & Lan, Anchang & Zhou, Xihua & Gao, Fei & Zhou, Jianbin, 2022. "Effect of CO2 injection on CH4 desorption rate in poor permeability coal seams: An experimental study," Energy, Elsevier, vol. 238(PA).
    10. Liu, Jia & Xue, Yi & Fu, Yong & Yao, Kai & Liu, Jianqiang, 2023. "Numerical investigation on microwave-thermal recovery of shale gas based on a fully coupled electromagnetic, heat transfer, and multiphase flow model," Energy, Elsevier, vol. 263(PE).
    11. Liu, Zhengdong & Lin, Xiaosong & Zhu, Wancheng & Hu, Ze & Hao, Congmeng & Su, Weiwei & Bai, Gang, 2023. "Effects of coal permeability rebound and recovery phenomenon on CO2 storage capacity under different coalbed temperature conditions during CO2-ECBM process," Energy, Elsevier, vol. 284(C).
    12. Xiong Ding & Cheng Zhai & Jizhao Xu & Xu Yu & Yong Sun, 2022. "Study on Coal Seepage Characteristics and Secondary Enhanced Gas Extraction Technology under Dual Stress Disturbance," Sustainability, MDPI, vol. 14(22), pages 1-18, November.
    13. Liu, Xudong & Sang, Shuxun & Zhou, Xiaozhi & Wang, Ziliang, 2023. "Coupled adsorption-hydro-thermo-mechanical-chemical modeling for CO2 sequestration and well production during CO2-ECBM," Energy, Elsevier, vol. 262(PA).
    14. Hao Wang & Xiaogang Li & Jingyi Zhu & Zhaozhong Yang & Jie Zhou & Liangping Yi, 2022. "Numerical Simulation of Oil Shale Pyrolysis under Microwave Irradiation Based on a Three-Dimensional Porous Medium Multiphysics Field Model," Energies, MDPI, vol. 15(9), pages 1-20, April.
    15. Yi Zhang & Jun Xu & Deming Wang, 2020. "Experimental Study on the Inhibition Effects of Nitrogen and Carbon Dioxide on Coal Spontaneous Combustion," Energies, MDPI, vol. 13(20), pages 1-14, October.
    16. Li, Min & Yang, Xueqin & Lu, Yi & Wang, Deming & Shi, Shiliang & Ye, Qing & Li, He & Wang, Zheng, 2023. "Thermodynamic variation law and influence mechanism of low-temperature oxidation of lignite samples with different moisture contents," Energy, Elsevier, vol. 262(PB).
    17. Zhao, Weizhong & Su, Xianbo & Xia, Daping & Hou, Shihui & Wang, Qian & Zhou, Yixuan, 2022. "Enhanced coalbed methane recovery by the modification of coal reservoir under the supercritical CO2 extraction and anaerobic digestion," Energy, Elsevier, vol. 259(C).
    18. Huang, HanWei & Yu, Hao & Xu, WenLong & Lyu, ChengSi & Micheal, Marembo & Xu, HengYu & Liu, He & Wu, HengAn, 2023. "A coupled thermo-hydro-mechanical-chemical model for production performance of oil shale reservoirs during in-situ conversion process," Energy, Elsevier, vol. 268(C).
    19. Zhang, Hewei & Shen, Jian & Wang, Geoff & Li, Kexin & Fang, Xiaojie, 2023. "Experimental study on the effect of high-temperature nitrogen immersion on the nanoscale pore structure of different lithotypes of coal," Energy, Elsevier, vol. 284(C).
    20. Zhou, Lijun & Zhou, Xihua & Fan, Chaojun & Bai, Gang & Yang, Lei & Wang, Yiqi, 2023. "Modelling of flue gas injection promoted coal seam gas extraction incorporating heat-fluid-solid interactions," Energy, Elsevier, vol. 268(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:12:y:2019:i:22:p:4236-:d:284265. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.