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Experimental study of the influence of water content on energy conversion of coal and gas outburst

Author

Listed:
  • Lili Li

    (Liaoning Technical University)

  • Jupeng Tang

    (Liaoning Technical University)

  • Shengjie Sun

    (Liaoning Technical University)

  • Jiahui Ding

    (Liaoning Technical University)

Abstract

In order to obtain the weakening influence of coal seam water injection on coal and gas outburst, taking the 1100 m outburst coal seam in Sunjiawan Coal Mine in Fuxin of China as the research object, coal and gas outburst energy conversion model was established. The influence of water content on coal and gas outburst test was studied by using a self-developed simulation experimental system. The relationships between water content and critical gas pressure, outburst strength and energy conversion rate were analyzed. The results show that gas pressure is the main power source of coal and gas outburst, and the relationship between water content and critical gas pressure increases exponentially. When the water content increases from 0% to 3% and 6%, the relative strength of outburst decreases by 9.6% and 1.2%, respectively. With the increase in water content, the relative outburst strength and absolute outburst strength will gradually decrease. Gas internal energy is the key factor affecting coal and gas outburst energy which is closely related to the outburst-forming and the outburst-triggering process. As the water content increases, the outburst-forming energy and the outburst-triggering energy increase linearly. However, the energy conversion ratio decreases linearly and the less prone to coal and gas outburst.

Suggested Citation

  • Lili Li & Jupeng Tang & Shengjie Sun & Jiahui Ding, 2019. "Experimental study of the influence of water content on energy conversion of coal and gas outburst," 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. 97(3), pages 1083-1097, July.
    • Handle: RePEc:spr:nathaz:v:97:y:2019:i:3:d:10.1007_s11069-019-03687-0
    DOI: 10.1007/s11069-019-03687-0
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    Citations

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    Cited by:

    1. Feng Zhang & Jinshan Zhang, 2022. "Research on Joint Protection Layers and Gas Prevention Technology in Outburst Coal Seams," Sustainability, MDPI, vol. 14(14), pages 1-15, July.
    2. Guo-Ying Wei & Fang-Chao Kang & Bin-Bin Qin & Tian-Rang Jia & Jiang-Wei Yan & Zhen-Dong Feng, 2020. "A novel method for evaluating proneness of gas outburst based on gas-geological complexity," 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. 104(2), pages 1841-1858, November.
    3. Zou, Quanle & Zhang, Tiancheng & Ma, Tengfei & Tian, Shixiang & Jia, Xueqi & Jiang, Zebiao, 2022. "Effect of water-based SiO2 nanofluid on surface wettability of raw coal," Energy, Elsevier, vol. 254(PA).

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