Variation Law of Infrared Radiation Temperature of Unloading Fracture of Composite Coal-Rock

Figure 6

Linear fitting of mean thermal infrared radiation temperature and stress. Here, (a), (b), and (c) are linear fitting results of composite coal-rock under confining pressure unloading rates of 0.003 MPa/s, 0.03 MPa/s, and 0.05 MPa/s, respectively.

(a)

(b)

(c)