Early Warning of Coal and Gas Outburst by Hierarchical Analysis and Extension Theory

Based on the mechanism of coal and gas outburst and the working experience of coal mine prevention, the indexes of coal and gas outburst are selected. The weight coefficient of each warning index is determined by the analytic hierarchy process, and the coal and gas outburst warning model is constructed based on the extension theory. In this paper, the quantitative early warning of coal and gas outburst and the classification of outburst risk of coal and gas outburst were carried out in 1361 (3) transportation roadway driving working face of Xiqiao Coal Mine. The results showed that the early-warning results of the hierarchical-extension warning model were in line with the actual situation of the working face.