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Natural Hazards

, Volume 97, Issue 3, pp 1083–1097 | Cite as

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

  • Lili LiEmail author
  • Jupeng Tang
  • Shengjie Sun
  • Jiahui Ding
Original Paper
  • 9 Downloads

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.

Keywords

Coal and gas outburst Water content Energy conversion rate Critical gas pressure Outburst strength 

Notes

Acknowledgements

This research is financially supported by the China National Key R & D program (2016YFC0600901) and the National Natural Science Foundation of China Program (51874165).

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Lili Li
    • 1
    Email author
  • Jupeng Tang
    • 1
  • Shengjie Sun
    • 1
  • Jiahui Ding
    • 1
  1. 1.School of Mechanics and EngineeringLiaoning Technical UniversityFuxinChina

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