The TIR detection experiments on marble and granite lead to the following conclusions:1. The overall surface IR radiation temperature of loaded rock increases with rock deformation, while the TIR anomaly occurs with rock fracturing after its elastic deformation stage.2. The average TIR temperature of the rock surface and the TIR radiation energy from the rock surface is proportional to rock stress and is cubic curvilinear to the mechanical work input before failure.3. The shape of the regression AIRT-w curve is opposite to that of the sigma -epsilon a curve, and the increasing AIRT after the stable elastic deformation is a practical indicator and a potential index for -rock failure detection and rock disaster prevention.4. The TIR-anomaly characteristics of the rock surface reflect the features of rock deformation or rock failure, i.e., the TIR anomaly will be positive if the deformation (failure) is compressive or shearing, while it will be negative if tensile.5. The TIR-anomaly stress for the marble failure and granite failure is, respectively, 0.97 sigma_c and 0.82 sigma_c.
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