Mine heat hazards is one of the difficult problems in deep mining, effectively controlling heat hazards is an important prerequisite for ensuring the working environment of underground workers. In order to explore the influence of ventilation parameters on the temperature distribution in the excavation roadway and the ventilating duct, and to get the optimal ventilation parameters for the comfortable region of the workers in the excavation roadway, in this paper, the temperature distribution in excavation roadway and ventilation duct under different ventilation parameters is numerically simulated, the orthogonal experiment is designed based on the orthogonal principle, and establishing the prediction model of workers' comfortable working region. The results show that changing the ventilation parameters has little effect on the temperature rise in the ventilation duct, and the range of the temperature rise in the ventilation duct is 0.39–0.86 °C with different ventilation parameters. According to variance analysis, the ventilation air temperature has the greatest influence on the air temperature in the excavation roadway, followed by the ventilation flow rate and the ventilation duct position. Moreover, as can be seen from the effect curve of temperature rise and comfortable working region, the optimal ventilation parameters of the roadway in this case are as follows: the ventilation temperature of 15 °C, the ventilation flow rate of 10 m/s, and the ventilation duct position of 10 m. The coefficient of determination of the comfortable working region prediction model is 0.983, and the residual distribution of the comfortable working region prediction model is normal distribution, indicating that the model can better predict the calculation of the comfortable working region with different ventilation parameters.

矿井热危害是深部开采的难题之一，有效控制热危害是保障井下工人工作环境的重要前提。为探讨通风参数对开挖巷道及通风管道内温度分布的影响，得到开挖巷道工人舒适区域的最佳通风参数，本文对开挖巷道内的温度分布进行了研究。对不同通风参数下的巷道和通风管道进行数值模拟，基于正交原理设计正交试验，建立工人舒适工作区预测模型。结果表明，改变通风参数对通风管内温升影响不大，不同通风参数下通风管内温升范围为0.39～0.86℃。根据方差分析，通风空气温度对开挖巷道空气温度的影响最大，其次是通风流量和通风管道位置。此外，从温升和舒适工作区的效果曲线可以看出，本案例巷道的最佳通风参数为：通风温度15℃，通风流量10m/s，和10 m的通风管道位置。舒适工作区预测模型的确定系数为0.983，