Volume 42 Issue 6
Oct.  2021
Turn off MathJax
Article Contents
WEI Chunfu, LI Huamin, YUAN Ruifu. Gas pressure effect in the process of coal and gas outburst[J]. COAL GEOLOGY & EXPLORATION, 2014, 42(6): 24-28. DOI: 10.3969/j.issn.1001-1986.2014.06.005
Citation: WEI Chunfu, LI Huamin, YUAN Ruifu. Gas pressure effect in the process of coal and gas outburst[J]. COAL GEOLOGY & EXPLORATION, 2014, 42(6): 24-28. DOI: 10.3969/j.issn.1001-1986.2014.06.005

Gas pressure effect in the process of coal and gas outburst

More Information
  • Received Date: April 09, 2013
  • Available Online: October 26, 2021
  • In order to investigate the gas pressure effect on the process of coal and gas outburst, similar simulation experiments were carried out for coal and gas outburst under the conditions of 5 different gas pressure and 3 axial stress with self-developed simulation test system and large medium hard coal sample when the moisture content, proportioning, coal sample forming pressure and other parameters are constant. Experiments show that there is a gas pressure threshold, when the coal and gas outburst exceeds this threshold, the higher the gas pressure becomes, the greater the relative intensity of outburst happens, and relative intensity and gas pressure shows positive index, gas pressure has a certain degree of crushing and conveying of extruded pulverized coal as the outburst dynamic, can form obpyriform outburst hole with small mouth and large venter, and the axial stress has a positive role on the outburst of gas-bearing medium hard coal.

Catalog

    Article Metrics

    Article views PDF downloads Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return