The invention belongs to the field of control of metallurgical continuous-
casting production techniques, and relates to a crystallizer breakout prediction method based on logical judgment. The crystallizer breakout prediction method based on logical judgment comprises the following steps that firstly, logical judgment rule parameters are read; secondly, data are acquired and processed; thirdly, temperature rise of thermocouples is detected; fourthly, the temperature
rise rate of the thermocouples which meet the temperature rise judgment condition is detected; fifthly, temperature change
delay of the three thermocouples around the
thermocouple TC (i, j) with abnormal temperature rise is detected; sixthly, the seven steps is conducted after detection of continuous temperature fall of the
thermocouple TC (i, j) or detection of the temperature change
delay of the thermocouples around the
thermocouple TC (m, n); seventhly, temperature inverted detection of the thermocouples is conducted; and eighthly, whether a sticking breakout alarm needs to be given out or not is judged according to the alarm shielding condition. By adoption of the crystallizer breakout prediction method based on logical judgment, timely and accurate prediction of sticking breakout is achieved, smooth proceeding of continuous-
casting production is ensured, and the quality of cast blanks is improved.