Study of The Infrared Temperature Field and Stress Field for A Bolted Rock
锚固体红外温度场与应力场特性研究

In order to study the thermo-mechanical coupling mechanism of a bolted rock, experimental study of deformation destruction for different type loaded bolted rocks was carried out. The infrared temperature field was obtained by using infrared thermal imaging technology; meanwhile, the numerical analysis of stress field was also carried out for the bolted rock. It is found that for a single centre bolted rock, before stress peak the infrared radiation temperature presents overall and uniformly warming with the loading increase; while after stress peak, the single centre bolted rock presents local dissimilation in thermal image. Multi-layer circular infrared radiation isothermal lines are formed around the bolt. Temperature gradually reduces from inside to outside. The infrared radiation temperature at the side with bolt is higher than that at the side without bolt. Trumpet shape infrared isothermal lines are formed around the bolt. The high infrared radiation isothermal lines correspond to the high stress zone; the low infrared radiation isothermal lines are in accord with the low stress zone. The infrared temperature field has spatial distribution corresponding with its stress field.