Method for quickly positioning heat damage area of underground mining face based on infrared thermal image

The invention relates to an underground mining face heat damage area rapid positioning method based on an infrared thermal image, and belongs to the technical field of mine ventilation. A complete mine ventilation system thermal parameter database is constructed by actually measuring mine rock stratum thermal parameter data, mine fan data and mining equipment thermal data, the complete mine ventilation system thermal parameter database is matched with thermal parameters of a mine ventilation three-dimensional laneway model, a mine ventilation system thermal model is established, the actual working condition of the mine ventilation system is dynamically simulated, and the mine ventilation three-dimensional laneway model is established. A wet bulb temperature abnormal point of wind temperature sudden change of a mining face in a model is predicted, an infrared thermal imager is adopted to collect an infrared thermogram at the predicted abnormal point, a thermogram isotherm is drawn, and a mining face heat damag