The high concentration of dust particles produced during excavation processes in mine tunnels are a serious threat to workers’ health. Accordingly, in order to ensure safe production in mines, it is of vital importance to gaining an in-depth understanding of the dust pollution control rules in a tunnel. The appropriate use of far-pressure-near-absorption (FPNA) ventilation systems can contribute to achieving the suppression of dust in a working face and safeguarding workers’ health. In this study, through the use of computational fluid dynamics’ (CFD) techniques, numerical simulations were performed in a tunnel to assess the dust suppression performance of a hybrid ventilation system. In these simulations, the air exhaust quantity (Q_c) and the height of the air pressure duct above the tunnel floor (D_y) were set at different values. The simulation results were validated using data from field measurements. If the pressure air quantity (Q_y) remained unchanged the diffusion distance of highly concentrated dust decreased with an increasing Q_c. From an economic perspective, 550 m³/min was determined to be the optimal value for Q_c. When Q_c was fixed at 550 m³/min but D_y was increased, the diffusion distance of highly concentrated dust first decreased and then increased. Therefore, an optimal dust suppression performance was achieved when Q_c = 550m³/min and D_y = 2 m. The present study therefore provides a new scheme for improving the underground operating environment and achieving safer production.

矿山隧道开挖过程中产生的高浓度粉尘颗粒对工人的健康构成严重威胁。因此，为确保矿山安全生产，深入了解隧道扬尘污染控制规则至关重要。适当使用远压近吸（FPNA）通风系统有助于实现工作面粉尘的抑制和工人健康的保障。在这项研究中，通过使用计算流体动力学 (CFD) 技术，在隧道中进行了数值模拟，以评估混合通风系统的抑尘性能。在这些模拟中，排气量 (Q _c ) 和隧道地板上方的气压管道高度 (D_y ) 设置为不同的值。使用来自现场测量的数据验证了模拟结果。如果压力空气量（Q _y）保持不变，高浓度粉尘的扩散距离随着 Q _c的增加而减小。从经济角度来看，550 m ³ /min 被确定为 Q _c的最佳值。当Q _c固定在550 m ³ /min 但D _y增加时，高浓度粉尘的扩散距离先减小后增大。因此，当 Q _c = 550m ³ /min 和 D _y时，实现了最佳的抑尘性能= 2 米。因此，本研究为改善井下作业​​环境和实现更安全的生产提供了新的方案。