SIMULATED EXPERIMENTAL STUDY ON INFRARED THERMAL IMAGE OF BOLT AND ROCK
锚杆与围岩加载过程的红外热像模拟实验研究

The infrared radiation experiments on bolt and rock in the process of loading were carried out.It is found that the infrared radiation temperatures of non-bolted block rise as a whole and uniformly before the stress peak,with the increase of loading,the sustaining ability of block is increased after fixing the bolt.The infrared radiation temperature also rises significantly.The bolted rock sees a local dissimilation in the thermal image after the stress peak.The multi-layer round infrared radiation isothermal lines are formed around bolt. The closer from the bolt centre,the higher will be the temperature,the farther away from the bolt centre,the lower temperature will be.The temperature is gradually reduced from inside to outside.The change of infrared radiation temperature fields responds to the stress fields around bolt.