IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i14p11171-d1196365.html
   My bibliography  Save this article

Mechanism of Nozzle Position Affecting Coalbed Methane Mining in High-Pressure Air Blasting

Author

Listed:
  • Huaibao Chu

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China)

  • Donghui Wang

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China)

  • Xiaolin Yang

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China)

  • Mengfei Yu

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China)

  • Bo Sun

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China)

  • Shaoyang Yan

    (College of Civil Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China)

  • Guangran Zhang

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China)

  • Jie Xu

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China)

Abstract

The use of clean energy is an important part of promoting sustainable energy development. As a clean energy source, coalbed methane, during the mining process, the position of the nozzle can influence coalbed methane extraction efficiency by affecting the cracking effect of coal. To investigate the impact of nozzles on the effect of coal fracture, a test of simulated coal by high-pressure air blasting was executed using nozzles 100 mm, 200 mm, and 250 mm from the orifice. Based on the test results and theories of fracture damage mechanics, two damage fracture models were established for the nozzles located in the middle-upper and middle-lower of the blasthole, respectively. The fracturing process and increased permeability mechanism of the coal were revealed by these two models. The results show that: when the nozzle is 100 mm from the orifice, the high-pressure air impacts the blasthole wall first, similar to a uniform expansion. Multiple longitudinal cracks are formed penetrating the coal. The permeability of the coal seam is greatly improved. When the nozzle is 200 mm and 250 mm from the orifice, the high-pressure air first impacts the bottom of the blasthole. The bottom hole angle and apex hole angle first form horizontal cracks while longitudinal cracks only appear at the same depth as the blasthole. The nozzle is 250 mm from the orifice to form a compaction zone at the bottom of the blasthole. The crack density is small and the tangential depth is shallow, which is not conducive to coalbed methane mining. The results of the research offer a theoretical framework and point of reference for the use of high-pressure air blasting technology in the extraction of coalbed methane (CBM).

Suggested Citation

  • Huaibao Chu & Donghui Wang & Xiaolin Yang & Mengfei Yu & Bo Sun & Shaoyang Yan & Guangran Zhang & Jie Xu, 2023. "Mechanism of Nozzle Position Affecting Coalbed Methane Mining in High-Pressure Air Blasting," Sustainability, MDPI, vol. 15(14), pages 1-15, July.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:14:p:11171-:d:1196365
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/14/11171/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/15/14/11171/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Xu, Jizhao & Zhai, Cheng & Ranjith, Pathegama Gamage & Sang, Shuxun & Sun, Yong & Cong, Yuzhou & Tang, Wei & Zheng, Yangfeng, 2022. "Investigation of the mechanical damage of low rank coals under the impacts of cyclical liquid CO2 for coalbed methane recovery," Energy, Elsevier, vol. 239(PB).
    2. Huaibao Chu & Mengfei Yu & Bo Sun & Shaoyang Yan & Haixia Wei & Guangran Zhang & Donghui Wang & Jie Xu, 2022. "Experimental Study on Damage Fracture Law of Coal from Solid-Propellant Blasting," Energies, MDPI, vol. 15(21), pages 1-11, October.
    Full references (including those not matched with items on IDEAS)

    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. 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).
    2. Wen, Hu & Mi, Wansheng & Fan, Shixing & Liu, Mingyang & Cheng, Xiaojiao & Wang, Hu, 2023. "Determining the reasonable volume required to inject liquid CO2 into a single hole and displace CH4 within the coal seam in bedding boreholes: case study of SangShuPing coal mine," Energy, Elsevier, vol. 266(C).
    3. Song, Haoran & Zhong, Zheng & Lin, Baiquan, 2023. "Impact of methane gas diffusion in coal on elastic modulus and porosity: Modeling and analysis," Energy, Elsevier, vol. 271(C).
    4. Lin, Haifei & Li, Botao & Li, Shugang & Qin, Lei & Wei, Zongyong & Wang, Pei & Luo, Rongwei, 2023. "Numerical investigation of temperature distribution and thermal damage of heterogeneous coal under liquid nitrogen freezing," Energy, Elsevier, vol. 267(C).
    5. Qin, Lei & Lin, Siheng & Lin, Haifei & Xue, Zitong & Wang, Weikai & Zhang, Xian & Li, Shugang, 2023. "Distribution of unfrozen water and heat transfer mechanism during thawing of liquid nitrogen immersed coal," Energy, Elsevier, vol. 263(PC).
    6. Zhou, Lijun & Zhou, Xihua & Fan, Chaojun & Bai, Gang, 2022. "Coal permeability evolution triggered by variable injection parameters during gas mixture enhanced methane recovery," Energy, Elsevier, vol. 252(C).
    7. Sun, Fengrui & Liu, Dameng & Cai, Yidong & Qiu, Yongkai, 2023. "A micro-macro coupled permeability model for gas transport in coalbed methane reservoirs," Energy, Elsevier, vol. 284(C).
    8. Zhao, Zhi & Lu, Hai-Feng, 2023. "Deep learning interprets failure process of coal reservoir during CO2-desorption by 3D reconstruction techniques," Energy, Elsevier, vol. 282(C).
    9. Geng, Weile & Huang, Gun & Guo, Shengli & Jiang, Changbao & Dong, Ziwen & Wang, Wensong, 2022. "Influence of long-term CH4 and CO2 treatment on the pore structure and mechanical strength characteristics of Baijiao coal," Energy, Elsevier, vol. 242(C).
    10. Zheng, Yangfeng & Zhai, Cheng & Chen, Aikun & Yu, Xu & Xu, Jizhao & Sun, Yong & Cong, Yuzhou & Tang, Wei & Zhu, Xinyu & Li, Yujie, 2023. "Microstructure evolution of bituminite and anthracite modified by different fracturing fluids," Energy, Elsevier, vol. 263(PB).

    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:jsusta:v:15:y:2023:i:14:p:11171-:d:1196365. 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.