深井开采通风线路长，导致局部通风量不足、热空气无法及时排出和作业面附近热量聚集等问题出现。随着矿山开采深度的增加，高温热害成为深井开采面临的难题之一，在地温梯度和井下各类热源的作用下，深井环境更加恶劣。为了改善深井掘进巷道高温环境，提高深井局部通风散热效果，以国内某大型地下金属矿山深部掘进巷道为背景，对深井局部通风参数进行优化研究。利用FLUENT软件构建掘进巷道三维模型并对巷道温度场进行数值模拟，通过对比不同风量和风温条件下的巷道温度变化情况，优选出适用于深井掘进巷道的最佳局部通风参数，并通过现场试验对模拟结果进行了验证。研究结果表明：数值模拟与试验验证相结合的方法科学有效，改善了单纯依靠试验的传统方法存在的高成本和重复性低的缺点；数值模拟方法可以直观展示巷道风温分布特征，局部通风参数优化后能够有效改善深部掘进巷道高温环境，对深井开采局部通风降温具有一定的指导意义。

With the depletion of shallow resources，deep mining has become the development trend of mines.Compared with shallow mining，one of the difficulties of deep mining is high temperature and heat damage.The ventilation lines of deep mining are long and complex，resulting in poor ventilation of deep working face，and the heat can’t be discharged in time.It is complex and difficult to improve the thermal environment of working face with the help of ventilation global optimization，while local ventilation optimization is economical，fast and efficient，so it has become the first choice to improve the thermal environment of working face.The selection of ventilation parameters in traditional local ventilation optimization usually depends on on-site test，which leads to high cost and poor repeatability，and can’t meet the requirements of parameter optimization.With the develop-ment of computer，numerical simulation is applied to the field of ventilation，which provides a new means for the research of local ventilation optimization.Taking a large underground metal mine in China as the research object，the wind temperature of excavation roadway at -945 m level in the mine was measured.Based on the roadway section size，the roadway model was constructed by FLUENT software，and the initialization setting of the simulation was completed in combination with the roadway boundary conditions.By changing the local ventilation parameters，the cooling effects under different ventilation parameters were obtained by numerical simulation of different inlet air temperature，inlet air volume，duct erection height and outlet position.The ventilation schemes under the above different parameters were applied in -945 m horizontal excavation roa-dway.The reliability of the numerical simulation results was verified by comparing the simulated temperature with the measured temperature under different schemes.While selecting the local ventilation parameters with the best cooling effect，taking into account the economy of local ventilation and the safety of underground operation.Finally，the optimal local ventilation parameters with good cooling effect，economy，safety and suitable for deep shaft excavation roadway were obtained.The conclusions are as follows：The comparison between the simulation results and the measured data shows that the two results are in good agreement，which proves that the numerical simulation is reliable and can be extended to other deep level local ventilation and cooling research.The research method of combining numerical simulation and experimental verification is scientific and effective，and improves the shortcomings of high cost and low repeatability of traditional relying solely on experiments.Numerical simulation intuitively shows the distribution characteristics of tunnel air temperature.The optimized local ventilation parameters can effectively improve the high-temperature environment of deep excavation roadway，and have certain guiding significance for local ventilation and cooling in deep mine mining.