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

Figure 5

-- curve of composite coal-rock. Among them, (a), (b), and (c) are the -- curves of composite coal-rock under the conditions of 0.003 MPa/s, 0.03 MPa/s, and 0.05 MPa/s confining pressure unloading rate, respectively.

(a)

(b)

(c)