IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i22p15118-d973302.html
   My bibliography  Save this article

Study on Coal Seepage Characteristics and Secondary Enhanced Gas Extraction Technology under Dual Stress Disturbance

Author

Listed:
  • Xiong Ding

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

  • Cheng Zhai

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

  • Jizhao Xu

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

  • Xu Yu

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

  • Yong Sun

    (School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

During the mining of coal seams with outburst hazard, abnormal gas emissions in front of the coal mining working face (CMWF) may induce gas overrun. To address this technical problem, this study analyzed the permeability variation of coal in front of the CMWF at different stress paths through physical experiments, numerical simulation and on-site tests. The spatial-temporal evolution law of the unloading area of the working face under dual stress disturbance caused by hydraulic punching (HP) and coal seam mining was explored; next, a secondary enhanced extraction technology was proposed and applied in the Shoushan No. 1 Coal Mine, Henan Province, China. The results reveal the following: (1) the coal permeability decreases linearly with increasing confining pressure (CP) and axial pressure (AP) under Stress Paths 1 and 2 (that is, fixed AP and CP). (2) The coal permeability is negatively related to the distance from the stress peak point under Stress Paths 3 and 4 (that is, AP and CP are, respectively, the vertical stress and horizontal stress before the stress peak). (3) As the distance from the peak stress declines, the reduction amplitude of coal permeability in the test area first decreases, and then increases, under Stress Paths 5 and 6 (that is, the vertical stress as CP and the horizontal stress as AP). The plastic damage range of coal around the HP cavities expands due to the dual impact of HP and coal seam mining, which can realize both regional unloading and provide channels for gas extraction within 60 m in front of the CMWF. According to the gas extraction concentration of boreholes, the coal body in front of the CMWF is divided into three zones: efficient, effective and original extraction zones. The efficient extraction zone is within 20 m in front of the CMWF, with an average gas extraction concentration of over 30%. In the effective extraction zone, the gas extraction concentration falls with the increase in the distance from the CMWF. The original extraction zone is beyond 50–60 m, and the borehole gas concentration stabilizes below 10%. The number of extraction boreholes in the stress disturbance area of the middle-floor gas extraction roadway accounts for 5–10% of the total number of boreholes, but its maximum monthly extraction volume can reach 38.5% of the total volume.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:22:p:15118-:d:973302
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/22/15118/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/22/15118/
    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. Bai, Yang & Lin, Hai-Fei & Li, Shu-Gang & Long, Hang & Yan, Min & Li, Yong & Qin, Lei & Zhou, Bin, 2022. "Experimental study on kinetic characteristics of gas diffusion in coal under nitrogen injection," Energy, Elsevier, vol. 254(PA).
    3. Zhengyi Ti & Feng Zhang & Jin Pan & Xiaofei Ma & Zheng Shang, 2018. "Permeability enhancement of deep hole pre-splitting blasting in the low permeability coal seam of the Nanting coal mine," PLOS ONE, Public Library of Science, vol. 13(6), pages 1-16, June.
    4. Cheng Zhai & Xianwei Xiang & Jizhao Xu & Shiliang Wu, 2016. "The characteristics and main influencing factors affecting coal and gas outbursts in Chinese Pingdingshan mining region," 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. 82(1), pages 507-530, 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. Pengxiang Zhao & Xingbao An & Shugang Li & Xinpeng Kang & Yitong Huang & Junsheng Yang & Shikui Jin, 2023. "Study on the Pseudo-Slope Length Effect of Buried Pipe Extraction in Fully Mechanized Caving Area on Gas Migration Law in Goaf," Sustainability, MDPI, vol. 15(8), pages 1-24, April.

    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. Haojun Wu & Min Gong & Xiaodong Wu & Yang Guo, 2022. "Effect and Response of Coal and Rock Media Conditions on Deep-Hole Pre-Splitting Blasting Techniques for Gas Drainage," Energies, MDPI, vol. 15(22), pages 1-17, November.
    2. Jilin Wang & Ming Li & Shaochun Xu & Zhenghui Qu & Bo Jiang, 2018. "Simulation of Ground Stress Field and Advanced Prediction of Gas Outburst Risks in the Non-Mining Area of Xinjing Mine, China," Energies, MDPI, vol. 11(5), pages 1-16, May.
    3. Bai, Yang & Zhang, Taole & Lin, Haifei & Liu, Xiangrong & Guo, Doudou & Li, Shugang & Yan, Dongjie, 2024. "Molecular simulation of the effect of anionic surfactant on methane diffusion in coal," Energy, Elsevier, vol. 295(C).
    4. Zhou, Aitao & Li, Jingwen & Gong, Weili & Wang, Kai & Du, Changang, 2023. "Theoretical and numerical study on the contribution of multi-hole arrangement to coalbed methane extraction," Energy, Elsevier, vol. 284(C).
    5. Haitao Sun & Jie Cao & Minghui Li & Xusheng Zhao & Linchao Dai & Dongling Sun & Bo Wang & Boning Zhai, 2018. "Experimental Research on the Impactive Dynamic Effect of Gas-Pulverized Coal of Coal and Gas Outburst," Energies, MDPI, vol. 11(4), pages 1-15, March.
    6. Guorui Zhang & Enyuan Wang & Zhonghui Li & Ben Qin, 2022. "Risk assessment of coal and gas outburst in driving face based on finite interval cloud model," 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. 110(3), pages 1969-1995, February.
    7. Ying Chen & Zhiwen Wang & Qianjia Hui & Zhaoju Zhang & Zikai Zhang & Bingjie Huo & Yang Chen & Jinliang Liu, 2023. "Influence of Gas Pressure on the Failure Mechanism of Coal-like Burst-Prone Briquette and the Subsequent Geological Dynamic Disasters," Sustainability, MDPI, vol. 15(10), pages 1-13, May.
    8. Yang, Gang & Song, Dazhao & Wang, Man & Qiu, Liming & He, Xueqiu & Khan, Majid & Qian, Sun, 2024. "New insights into dynamic disaster monitoring through asynchronous deformation induced coal-gas outburst mechanism of tectonic and raw coal seams," Energy, Elsevier, vol. 295(C).
    9. Yang Liu & Tong Zhang & Yankun Ma & Shuaibing Song & Ming Tang & Yanfang Li, 2022. "Deformation behavior and damage-induced permeability evolution of sandy mudstone under triaxial stress," 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. 113(3), pages 1729-1749, September.
    10. Wen, Hu & Yan, Li & Jin, Yongfei & Wang, Zhipeng & Guo, Jun & Deng, Jun, 2023. "Coalbed methane concentration prediction and early-warning in fully mechanized mining face based on deep learning," Energy, Elsevier, vol. 264(C).
    11. Junqi Zhu & Li Yang & Xue Wang & Haotian Zheng & Mengdi Gu & Shanshan Li & Xin Fang, 2022. "Risk Assessment of Deep Coal and Gas Outbursts Based on IQPSO-SVM," IJERPH, MDPI, vol. 19(19), pages 1-22, October.
    12. Li, Shugang & Yan, Dongjie & Yan, Min & Bai, Yang & Zhao, Bo & Long, Hang & Lin, Haifei, 2023. "Molecular simulation of alkyl glycoside surfactants with different concentrations inhibiting methane diffusion in coal," Energy, Elsevier, vol. 263(PB).
    13. Zebiao Jiang & Xiping Quan & Shixiang Tian & Hao Liu & Yaling Guo & Xiangxiang Fu & Xifa Yang, 2022. "Permeability-Enhancing Technology through Liquid CO 2 Fracturing and Its Application," Sustainability, MDPI, vol. 14(16), pages 1-23, August.
    14. Junhong Si & Lin Li & Jianwei Cheng & Yiqiao Wang & Wei Hu & Tan Li & Zequan Li, 2021. "Characteristics of Airflow Reversal of Excavation Roadway after a Coal and Gas Outburst Accident," Energies, MDPI, vol. 14(12), pages 1-13, June.
    15. 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.
    16. Yuan Zhao & Shugang Cao & Yong Li & Hongyun Yang & Ping Guo & Guojun Liu & Ruikai Pan, 2018. "Experimental and numerical investigation on the effect of moisture on coal permeability," 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. 90(3), pages 1201-1221, February.
    17. Weiyao Guo & Qingheng Gu & Yunliang Tan & Shanchao Hu, 2019. "Case Studies of Rock Bursts in Tectonic Areas with Facies Change," Energies, MDPI, vol. 12(7), pages 1-11, April.

    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:14:y:2022:i:22:p:15118-:d:973302. 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.