Using random solid-heat coupled mathematical model and FEM
only considering thermal dilatability and thermal conduction as random variables
plane stain model is adopted to analyze the changes of thermal cracking of rocks caused by thermal stress; and the whole process of thermal cracking of rocks with Gaussian distribution and Weibull distribution laws is simulated. The influences of probability distribution and distributed parameter m on thermal cracking of rocks are pointed out; the relationships between thermal cracking of rocks and time t,the temperature and distributed parameter m
the temperature and time are discussed; the change law of thermal cracking rate between time and temperature is studied.