Theoretical Analysis on Gas Emission from Thrown Coal during Coal and Gas Outburst
In order to calculate the gas emission quantity after coal and gas outburst, a theoretical analysis on dynamic gas emission from the thrown coal was performed. Based on the law of gas emission rate from coal grain and the supposition that breaking wave velocity is constant, the relationship between gas emission rate from the thrown coal and time was derived. The results show that gas emission rate from the thrown coal rapidly increases at the initial stage of outburst, and then gradually reduces with the time increasing. The maximum value of gas emission rate increases with the initial gas desorption rate increasing.
Coal and gas outburst Gas desorption rate Dynamic gas emission Thrown coal Theoretical analysis
CHENG Guoqiang SONG Yanjin I Haigang
Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science & Technology, Qingdao,266510,China
国际会议
2010 International Conference on Mine Hazards Prevention and Control(第二届矿山灾害预防与控制国际学术会议 ICMHPC)
青岛
英文
251-255
2010-10-15（万方平台首次上网日期，不代表论文的发表时间）