Mathematical Problems in Engineering / 2017 / Article / Fig 9

Research Article

A Fisher’s Criterion-Based Linear Discriminant Analysis for Predicting the Critical Values of Coal and Gas Outbursts Using the Initial Gas Flow in a Borehole

Figure 9

A photograph of the outburst simulation experiments ((a) Xuehu: weak outburst, 0.216 MPa, CO2; (b) Fenghui: strong outburst, 0.346 MPa, CO2).