Experimental Study on Gas Pressure Effects on Gas Desorption Characteristic of Coal Seam
To further explore the impact of gas pressure on gas desorption and flowing law, the gas desorption experimental system designed autonomously is used to carry out studies on gas desorption experiment under different gas pressures.By data fitting, the relationship between gas desorption quantity and time is obtained and also established the model for gas desorption.The results show that: the gas desorption quantity curves is The first half rises sharply, the latter half segment is gently rising and eventually becomes stabilized, and when the gas adsorption equilibrium pressure is the greater, the gas desorption amount is greater.And the formula Q =Qmax1-exp-(t/b)0.68 can describe the gas desorption law well, the correlation coefficient R2 is above 0.97.The study provides an important theory reference to coal and gas outburst prediction, coal seam gas content prediction and its exploitation and utilization.
coal seam gas desorption gas pressure
Linchao Dai Dayong Lu Zhen Liu
National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling,Chongqing, 4 Chongqing Research Institute, China Coal Technology and Engineering Group, Chongqing,400037, China
国际会议
湖北荆州
英文
367-370
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）