Research on early warning method of coal and gas outburst based on DOAS double sampling technology

摘要

Preliminary study found that the emission of trace gases helium, argon reflect the existing state of stress in the geology. Through the detection of the changes of He and Ar, it can predict the migration of coal seam stress zone, and further predict the risk of gas outburst. For the Research of sampling technology on He, Ar, CH4 and other trace gas and the neighborhood rough set early warning model in coal and gas outburst, a reliable real time double sampling method is designed, and the joint measurement systems of He, Ar, CH4 is established. The research results will achieve the real-time continuous online detection of He, Ar, CH4, and found that the mechanism of coal and gas outburst prediction based on component characteristics of helium and argon, and provide a new means for coal and gas outburst early warning.