Study on the formation mechanism of shock wave in process of coal and gas outburst
Tóm tắt
According to the research results of motion parameters of coal-gas flow, analyzed the formation mechanism of shock waves at different states of coal-gas flow in the process of coal and gas outburst, and briefly described the two possible cases of outburst shock wave formation and their formation conditions in the process of coal and gas outburst, and then pointed out that a high degree of under-expanded coal-gas flow was the main reason for the formation of a highly destructive shock wave. The research results improved the shock wave theory in coal and gas outburst.
Tài liệu tham khảo
Cheng W Y, Chen G X, 2000. The forming of shock wave in process of the coal and gas outburst. Mine Safety, (9): 23–25.
Cheng W Y, Liu X Y, Wang K J, 2004. Study on regulation about shock-wave-front propagating for coal and gas outburst. Journal of China Coal Society, 29(1): 57–60.
Sun D L, Liang Y P, Miao F T, 2007. Influence of gas pressure state on the motion parameters of coal-gas flow in the outburst hole. Journal of Coal Science & Engineering (China), 13(4): 425–429.