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

Figure 7

Schematic diagram of test equipment and field test. Figure 7(a) is the schematic diagram of the field test, and Figure 7(b) is the schematic diagram of the test equipment. The test equipment is mainly composed of a triaxial test machine, a power control cabinet, a nitrogen box, an infrared thermal imager, and a computer. Power is supplied by the power control cabinet during the experiment. The inlet valve and outlet valve of the nitrogen tank are responsible for controlling the pressurization of the processed composite coal-rock. An observation window is set on the shielding cylinder of the three-axis testing machine, and an infrared thermal imager is placed here to collect the data of the samples. The mechanics and temperature data are uniformly transmitted to the computer for display and storage.

(a) Schematic diagram of field test

(b) Schematic diagram of test equipment