Experimental study on the influence mechanism of gas seepage on coal and gas outburst disaster
By using the self-developed triaxial servo-controlled seepage equipment for thermo-fluid-solid coupling of coal containing gas and the self-developed coal and gas outburst simulation test device, experiments to study the influence mechanism of gas seepage on coal and gas outburst disasters. The results show that: (i) gas seepage decreases the strength of coal containing gas and accelerates its failure process; (ii) under the same gas pressure, the confining pressure is larger, the more difficult the gas flows and the greater the intensity of coal containing gas is; (iii) in the process of coal and gas outburst, the greater the vertical ground stress is, the more powerful the outburst will be; (iv) the influence mechanism of gas seepage on coal and gas outburst disasters is as follows: firstly, gas seepage weakens the mechanical properties of coal body, which makes it much easier for coal and gas outburst to occur; secondly, on the same effect of external force, it will be easy to form a high gas pressure zone in the coal body under the difficult condition of gas seepage, and accumulate more gas compression energy, which is the energy source for coal and gas outburst, and it is also the main dynamic source to throw and grind the coal.
coal and gas outburst gas seepage disaster influence mechanism
S.J. Peng J. Xu H.W. Yang D. Liu
Key Laboratory for Exploitation of Southwestern Resources and Environmental Disaster Control Engineering,Ministry of Education, Chongqing University, Chongqing 400044, China State and local joint engineering laboratory of methane drainage in complex coal gas seam, Chongqing University,Chongqing 400044, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
1056-1065
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）